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• Complete machine freezes...at a loss

  - by user28818

  Guys, We built around 12 machines a few months ago to run Ubuntu. They each have the following specs: ASUS Z8NA-D6 motherboard Dual quad core Intel(R) Xeon(R) CPU E5520 @ 2.27GHz OCZ Mod Extreme Pro 500W power supply 12 GB Kingston RAM Nvidia GeForce 9800 GT graphics card My machine ran well for awhile. However, it started experiencing random lockups. These lockups are not X lockups, they are complete system freezes. The nic stops responding, the magic sysrq buttons won't work. The machine is dead. I first suspected RAM. Memtest86 didn't find anything, but I replaced the RAM anyway. Still, lockups. So I replaced the graphics card. Still, more lockups. They became more and more frequent and started to happen 2-3 times a day. So I replaced the motherboard and power supply in one fell swoop. Suddenly, no more lockups! Woohoo! Except, a week later, in the morning, the machine wouldn't wake up. I reset it, started it up, and the log files showed the last entry at around 11 pm the evening before. This has started occurring with more frequency...now just about every morning I come in, the machine is locked up, and has been since the night before. Yesterday, in the 3 weeks since I replaced the motherboard and power supply, the machine actually locked up on in in mid-work. This is the first time since replacing the two (MB and PS) that this happened while I was using it. All others occurred while I was away. I'm at a loss. Nothing is in syslog or message that would indicate a problem around the time of the lockup. Temps are good...I use lmsensors to monitor and have a script that writes the output to file every minute. They never get that high. The only thing I haven't replaced at this point is the case and the harddrives. I doubt either could be the cause. What would you do if you were in my shoes? Is there a troubleshooting approach I'm missing? For the record, all of the other machines, all eleven of them, don't have any problems. They're all running the same version of Ubuntu (Lucid) that I am. Thanks!

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• SBS 2008 reinstall on new machine

  - by Jon

  We purchased a single license on Windows Small Business Server 2008 for a medical office, and soon after a power fault caused the server to overload, destroying the power supply and motherboard. I reinstalled on a new server, and have the domain up and running again, but under system properties it tells me I still need to activate windows, and that the product key currently entered is invalid for activation. I've been trying to figure out how to get in touch with Microsoft to explain the situation and get a new activation key issued without having to pay for another license which we can't afford, but the online documentation hasn't been particularly clear on the subject. Does anyone know how to do that, or if I do need the activation key to continue using SBS 2008? (It currently tells me I have 56 days left to activate) Any tips would be appreciated. I'm not strictly a computer guy and I'm feeling a little lost.

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• Strange monitor issue - screen goes black after a few seconds

  - by Scott Szretter

  My LCD monitor display is going black (turning off). It's a Samsung SYncMaster 2233 widescreen. I am trying to figure out if there is anything I can do about it, or if the monitor is junk. I have tried multiple computers, all have the same issue. I have tried a different vga cable, same issue. Power and video cables are tight / double checked. When I power on the monitor, the blue light turns on at the bottom. Then a second or two later the video comes up as expected and it looks fine. However, about 2-3 seconds after that, the screen goes black. The blue light is still on and solid at the bottom (blue light normally flashes when the monitor is sleeping). If I power cycle the monitor, same thing happens. With no computer connected or when I unplug the vga cable, I see the searching for signal message "digital", then the screen goes black. However it usually shows "digital" then "analog" after that and switches between the two a few times. The buttons on the side do not do anything, although they may be, I just can not see if they are or not. I can usually get the "digital" message by pressing the buttons on the side, but then it quickly goes black again. What is really strange is sometimes I can get it to work fine. I am not sure what the difference is. Last week I connected it up and it worked fine and it stayed fine for at least a week! I did not turn it off or anything, I just let the OS put the display to sleep. Then this week one morning I started having the screen going black issue again. Seems like something is either loose inside or beginning to fail. Do you think there is any hope for it? update: pushing the input select button causes the "digital" and "analog" messages to flash on the screen, but only for a few seconds then it goes black. When it was working properly, those messages would flash back and fourth for probably 10-20 seconds then a message would show saying check input signal, but now just a black screen.

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• CRC function without order dependancy

  - by Pirks

  I need CRC mechanism allow to calculate CRC of number of strings string A,B crc(A) + crc(B) == crc(A+B) P.S. XOR too weak.

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• Windows 8 disk errors

  - by wrongusername

  So yesterday, I forcibly restarted my Windows 8 PC. VMWare Workstation was having some trouble with the guest Linux Mint OS. It wasn't responding for some time, so I tried suspending it September 28th or perhaps even before. It wouldn't suspend -- I forgot what the window looked like, but all options in the power menu were disabled (i.e. "Shutdown," "Power Off," and options like that were all disabled). I eventually killed the VMWare application through Task Manager, though I was too lazy to hunt down the running virtual machine itself, and decided to kill it by just shutting down my PC entirely. The PC wouldn't shut down for quite some time after the monitor went blank, so I did a cold reset by holding the power button. I then powered it on again and Windows briefly gave me some message like "Search for KERNEL_STACK_INPAGE_ERROR." Windows then started diagnosing some problems and gave me the message, "Repairing disk errors. This might take over an hour to complete." That was yesterday night, and I went to sleep without waiting for it to finish. This morning, it said that the repair failed, and that the log was at C:\windows\system32\LogFiles\srt\srtTrail.txt (as I remember it -- I don't have the exact path I wrote down right now). It gave me some other options to troubleshoot, such as resetting Windows (files and settings still intact, but programs not installed through the app store will be erased). That didn't work (no error message given, I was just told it didn't work). I tried rebooting in safe mode, the same diagnosis process begins, except that this time it doesn't bother with the automatic repairs again. So I tried using the command prompt to try to see if my files are at least still there. I was on the X drive, and I couldn't cd to the C drive. I couldn't find my folder under Users (of course?), and couldn't find the srt folder under LogFiles either. I am not sure what to try next. I have backed up everything, but to the cloud, so if absolutely necessary I can start off with a fresh copy of Windows and restore all my data, though it would be a hassle. Any thoughts on what might be wrong or what I can try? My computer was purchased just this June, so the hard drive should still be pretty new.

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• plugging in a 3.3V 50pin laptop HDD to USB?

  - by barlop

  I have a 50pin laptop hard drive. 1.8" wide. This 50pin connector concerns me.. Even if I get an adaptor, How can I know which side of the connector takes the power? I don't want to plug it in the wrong way. And I don't have n adaptor.. Could people link me to adaptors too. but main question is, which side to plug it in when I get the adaptor. I want to be sure. I do not want to blow the hdd. For the 3.3V I have a plan. Connecting green and black and using the orange cable(3.3v) to feed power. I am not too worried about that bit. But as I said.. Main thing is I want to know which side is 3.3V hard drive is MK6006GAH

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• Update a DNS to a for a dynamic IP

  - by zobgib

  I want to use my schools connection as a place to host a small webserver but one problem I have run into is anytime my server reboots I am given a new IP inside the schools range. All of the schools IP are public and therefor I can access my computer directly over WAN just via the IP given in ifconfig. I would like to be able to give my computer a dns which is easy enough when I change the Arecords to match the current IP of my computer. The problem is if my computer ever reboots (my school regularly cycles power at night and over holidays) I am assigned a new IP and have to realize it then update the Arecords This is inconvenient and I figure there must be a better way to keep the DNS records updated either via a script or my own BIND server. That way if there is a power cycle I can still access the server via a Domain Name. If you have any direction to point me in it would be much appreciated. I am running Ubuntu 10.04 if that helps :).

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• Windows 8.1 will not boot after upgrading from Windows 8 on my PC

  - by user266969

  I have not found a fix. After running the Windows 8.1 Update from the store my computer will not boot unless In insert my recovery USB drive and try to repair. (The repair fails.) However after I power of the PC and remove the USB drive. The PC will boot correctly once. I would leave the PC on but it shuts it self off at night. (And yes I have checked my power profile, it is set to never.) The only thing I have found online is a possibly corrupt video driver. I uninstalled the video driver reboot and it did not fix the issue. Anybody have any suggestions? The PC is a HP EliteBook 8730w laptop. I had no issues with Windows 8 or the Windows 8.1 preview.

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• Windows Home Server Passwords Do Not Match [closed]

  - by Ben Fulton

  I have a Windows Home Server that chunks along just fine most of the time. I've never bothered to put it on a GPS and so it's vulnerable to power outages that happen a few times a year. This most recent time, it came back and seemed to be fine, but whenever I try to access a shared folder I get "Passwords do not match". They matched before the power went out, and I couldn't update the WHS password since I apparently didn't know the old one. How do I fix this?

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• Lenovo G500 Re-booting failed

  - by Sune

  I have a Lenovo G500. Yesterday it asked me to reboot the system. I did. Now it wont come back on. I have tried everything I read online like taking out the battery and holding the power button in for 20 seconds, then switching on the pc with only the ac adapter plugged in. I still only see the backlight of the pc, nothing else. I also tried to hold in the Fn key and tried all other F keys (F2, F12, etc.) I also pressed that little button next to the power button, but nothing is responding. Please help.

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• Windows 7: Use VirtualStore as user for own benefit?

  - by mfn

  I've researched a bit and came to the understanding that VirtualStore is part of the new UAC feature in Vista/W7 which is the file system part of the transparent data redirection and redirects write access to folders like program files to C:\User\<username>\AppData\Local\VirtualStore\ in lack of applications respecting the LUA principles. Now I'm interested if that kind of transparent redirection can also be used as a power to the user. Here's an example which comes to my mind: I install any kind of software to e.g. D:\Whatever\ThisAndThisApp\ and I set up things that, after initial installation, any write access to this folder is transparently redirected to e.g. D:\MyOwnVirtualStore\Whatever\ThisAndThisApp\file_only_writable_here.txt. Is this thinking too far or can I actually use that power of VirtualStore as a user on Windows 7? I'm using the Professional version of that matters.

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• Computer hanged in the middle of bios flashing process

  - by Stalker

  I have a laptop: Toshiba Satellite c660-17j, today I decided to update BIOS. I've downloaded bios updater from manufacturer's web site, and in the middle of flashing process computer hanged. I was waiting more than 30 minutes, but nothing was changed on the screen, i've tryed to PRESS MORE BUTTONS, but there were no reactions, so i've turned it off by removing battery (all other methods failed, even pressing power button for ~10 secs). After that computer can't start. I understand, that there's MESS in BIOS chip, and it's possible to re-flash it with hardware programmer, but I don't have it. I remember, that on some PCs (even on my eeepc) there was possibility to re-flash bios by inserting usb flash-disk (with .dat file on it, which contained BIOS), and power on PC, while holding some keys combination, then PC was switching to BIOS programming mode and re-flashed BIOS, after that it was possible to boot up normaly. Is there a way to recover computer without hardware programming BIOS chip? p.s. sorry for my english.

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• TFS 2010 Check-in Policies

  - by Liam

  Currently we have check-in policies that are implemented by installing the TFS 2010 Power Tools on each developer machine. I was wondering if there was a way we could store those policies centrally within the TFS Server itself and push them out to the Developer machines in a group policy fashion without having to install anything additional on the Developer machines as realistically we only want the Power Tools on a couple of people's machines. I can't seem to find any documentation on how to do this or if it's possible so if someone could point me in the right direction I'd be very grateful.

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• Dell eSATAp not working with some SATA disks

  - by pistache

  I have a Dell Inspiron XPS 15 (L502X) laptop, with an eSATAp port. I also have a Western Digital 1TB 3"5 SATA drive, that I'd like to use with the laptop. I bought a eSATAp <- SATA 22-pin cable (from Delock). When I use this cable my 3"5 HDD does NOT power up, no spin up. I thought that it's just this HDD taking too much power from the motherboard. However, I tested too with my 2"5 SATA HDD and it works successfully. Now the weird thing is that this 2"5 HDD takes 1.1A at 5V, and that the 3"5 HDD takes 0.7A at 5V. I don't understand why it can't work. Is there anything I could do for it to work ? What is really the problem ? Thanks for your help, Hugo

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• Prevent Windows 7 from unpluging External HDD [migrated]

  - by marverix

  I have installed Windows 7 as my media server. I pluged in 500GB external HDD via USB. I have changed power plan to Best Performance and changed advenced power settings to never turn off HDD etc. I even yesterday wrote powershell script (create and delete folder on this disk) and I have added it to harmonogram to run every 5 minutes starting from system boot. And nothing! Disk after some time (I realy can't say when) is turning off and Windows show "Unknown Device" in Device Manager. Then only system reboot or disk reboot helps. Any ideas how to prevent Windows 7 from stopping my external HDD? Cheers!

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• I know this is a stupid question but... How many websites can my server potentially hold?

  - by Daniel Kindler

  Sorry for the "noob" question, but... About how many medium-sized websites with average traffic could this server hold? Just like the average website, kind of like a small business site. How many sites could this server hold, but still maintain nice, decent speed? PowerEdge R510 PE R510 Chassis for Up to Four 3.5" Cabled Hard Drives, LED edit Processor Intel® Xeon® E5630 2.53Ghz, 12M Cache,Turbo, HT, 1066MHz Max Mem edit Memory 8GB Memory (4x2GB), 1333MHz Single Ranked UDIMMs for 1 Procs, Optimized edit Operating System SUSE Linux Enterprise Server 10, SP3, Up To 32 CPU Lic, 1 YR Sub, DIB, Media edit Red Hat Enterprise Linux Licensing Hard Drives 250GB 7.2K RPM SATA 3.5" Cabled Hard Drive edit Hard Drives 1TB 7.2K RPM SATA 3.5" Cabled Hard Drive edit Hard Drives 2 X 2TB 7.2K RPM SATA 3.5in Cabled Hard Drive Hard Drive Configuration No RAID, Embedded SATA Controller for x4 Chassis edit Power Supply 480 Watt Non-Redundant Power Supply edit Thank you!

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• symmetrical text scramble

  - by acidzombie24

  What is the EASIEST way to do this. XOR 0x80 may be too obvious but that COULD work. Whats the easiest way to take a windows filename (/ \ and other chars are illegal) and scrambling them so no one knows the original filename? I would like to undo this as well. I am seriously thinking foreach on the filename and just XORing them

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• Hardware recommendations for building an Ubuntu encrypted file server

  - by Robert Mashlan

  I would like to build a file server for my home network using Ubuntu. It will serve files from RAID1 configured disks, either in the OS or in hardware. It will be connected to a Gigabit ethernet LAN. The disks will use an encrypted file system. It will serve samba shares. I would like a recommendation on what kind of processing power/memory I would need to build a box that would be able to sustain the full capacity of the Gigabit ethernet connection in a file transfer for a single connection with the overhead of serving from an encrypted disk. I'm not looking to build a dream server, I just want enough processing capacity for high performance (and reliable) file sharing and spend as little as possible for it. This may be tangential, but what kind of hardware would I need to have a server be able to reliably go into a low power mode when no requests are being made of it?

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• how to do bitwise exclusive or of two strings in python?

  - by mekasperasky

  i would like to do bitwise exclusive or of words in python but xor of strings are not allowed in python . so how to do it ?

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• How many websites can my server potentially hold?

  - by Daniel Kindler

  Sorry for the "noob" question, but... About how many medium-sized websites with average traffic could this server hold? Just like the average website, kind of like a small business site. How many sites could this server hold, but still maintain nice, decent speed? PowerEdge R510 PE R510 Chassis for Up to Four 3.5" Cabled Hard Drives, LED edit Processor Intel® Xeon® E5630 2.53Ghz, 12M Cache,Turbo, HT, 1066MHz Max Mem edit Memory 8GB Memory (4x2GB), 1333MHz Single Ranked UDIMMs for 1 Procs, Optimized edit Operating System SUSE Linux Enterprise Server 10, SP3, Up To 32 CPU Lic, 1 YR Sub, DIB, Media edit Red Hat Enterprise Linux Licensing Hard Drives 250GB 7.2K RPM SATA 3.5" Cabled Hard Drive edit Hard Drives 1TB 7.2K RPM SATA 3.5" Cabled Hard Drive edit Hard Drives 2 X 2TB 7.2K RPM SATA 3.5in Cabled Hard Drive Hard Drive Configuration No RAID, Embedded SATA Controller for x4 Chassis edit Power Supply 480 Watt Non-Redundant Power Supply edit Thank you!

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• Windows 7: How to boot up in normal mode after improper shut down?

  - by Level1Coder

  I work in two different locations and whenever there is a power outage at one of the locations, Windows 7 detects that the system was improperly shutdown. Once the power is up, the PC powers on and Windows 7 enters REPAIR/SAFE mode where only someone physically in front of the PC can control it. (Networking is all disabled in this mode) Now before it enters REPAIR/SAFE mode, there is an option for a NORMAL boot. But the catch is that REPAIR/SAFE mode is selected by default with a 30 second timer. Once it automatically enters REPAIR/SAFE mode and if nobody is at the other location, I have no way to remote control it anymore. And then I have to drive over to the other location and reboot it and select boot into NORMAL mode. Where can I change this setting so that Windows 7 always boots into NORMAL mode no matter how many times it is improperly shut down?

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• Computer stopped working (ASUS P5GD1-VM)

  - by Gordonrjones

  My computer stopped working the other day. I came down and it was kind of chirping away. Then, when I restarted it, it only did the same thing. I unplugged everything not needed and it did nothing at all. I thought maybe the power supply wasn't working, but when I took the cover off the green light on the motherboard was on and the power supply is making a little buzzing sound. But nothing happens when I turn the computer on, other than the green light on the motherboard flickers a bit. I checked the memory in other computer and it works fine. I'd love to be able to fix this with as little cost as possible. Can someone here help? P4-640 (3.2E GHz, 800 FSB, L2:2MB, EM64T, HT)

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• Pc not booting, no video output, hard drive noises

  - by bullettime

  My computer suddenly stopped booting up. I just came back from a week long trip, and it was working fine before I left. When I power up the computer now, it seems to power up just fine (leds on, fans working), but then there's no output on the screen at all, and there's a noise that seems to be coming from the HD, like it is trying to read something. After the noise starts, it does 6 cycles and then stops. I'm not sure but I don't think it did this noise when the pc was still working. I tried using the onboard video card instead but it made no difference. What could be wrong with my computer?

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• How do I disable Windows Search Indexing Service while on battery on Windows 7?

  - by Slaggg

  Since upgrading from Windows XP to Windows 7, I've found laptop battery life is reduced. One issue is that the Windows Search Indexing Service is constantly running, even when on battery power. Using Resource Monitor shows it is often the top consumer of CPU time and top producer of disk activity. I imagine this is one of the primary reasons the battery is getting drained faster. I cannot find any options to tell Windows Search Indexing Service to not index while on battery power. The only solution seems to be to stop the service, and also disable the service (if you just stop it, it will restart itself after a while). Doing this gives me considerably more battery life, but it's a pain because I have to re-enable the service when plugged in again. Is there a better solution?

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• Problem with Toshiba Mini Netbook not turning on

  - by wahle509

  This is the second time this has happened with my Toshiba Mini Netbook. When I restart it, it will shut down but then not come back up. It seems like it's running but the screen is blank and the power button is lit. The first time it happened I shut it down via the power button, then turned it back on while pressing F2 and it came up properly. Now, however, it is not doing it. The screen remains blank. What could be causing this and how do I fix it? It is running Windows XP.

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