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• Drivers not installing and drives not being recognized

  - by jab818

  Dell optiplex 755 running win7-32 Two problems, not sure if they're related 1: Two drivers are missing when viewing device manager, PCI serial port and PCI Simple Communications Controller, I've searched dell's site, and the internet as a whole and have been wholly unable to find the drivers. 2: I'm unable to connect any external hard drives, but any flash drives plugged in will be recognized and accessible by the computer without issue. Any help would be appreciated.

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• CSMA/CD and CSMA/CA

  - by Zia ur Rahman

  CSMA/CD is used in wired LANs, CSMA means that the computers on the network sense the medium if the medium is idle, the computer transmits otherwise it defers sending.CD refers to collision detection. I don’t want to write about CD because its not related to my Question. Now in case of wireless LANs we use CSMA/CA , here CSMA refers to carrier sensing , the Question is how carrier sensing is done in case of wireless LANs? the collision avoidance is done by sending the control message to the intended receipient.

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• No audio from USB device on iMac

  - by brandon

  My computer froze the other day and started a buzzing noise. After I restarted in the middle of it, the buzzing persisted. A few restarts later, the buzzing stopped, but I can't get audio to come from my audio interface setup anymore. I'm using an M-Audiophile USB to connect to studio monitors, and there's absolutely no audio. I've tried restarting many times and unplugging - still nothing. Any help would be appreciated.

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• Any rerefence of CPU world statistics?

  - by Áxel Costas Pena

  I am looking for any referencee about computer power statistics across the world. My main interest is about real computing capabilities, so I'd prefer information about real processor power, and even best if it includes also other critical hardware statistics, like RAM memory, but if it isn't possible, maybe statistics about brand/model distribution will be also useful. I've Googled for some minutes and I've found nothing related.

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• Separate mail section for POP mail account in Evolution

  - by Phuong Nguyen

  In Evolution, if I use IMAP as the incoming protocol for the mail account, then this account will have a separated section. However, if I use POP as the incoming protocol, then this account is merged into On this Computer group. I want POP account to have a separated section. How would I do that?

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• Unix mail question

  - by InBetween

  I'm wondering where some information came from in a message I got on my Mac laptop. Here's the message: From [email protected] X-Original-To: john Delivered-To: [email protected] From: [email protected] (Cron Daemon) To: [email protected] ... Where did it get the "[email protected]" I know my username is john, and my computer is leutenberg, but where did it get the horners.org part? Thanks.

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• Remember login when connecting to another domain on Windows 2008 Sever

  - by lox

  I run Windows 2008 Server (x64) as a workstation and my computer is on one domain and my exchange server, shared folders and intranet is on another domain. Every time I connect to these eg. every time I open Outlook I am prompted to supply username and password in a "Connect to"-dialog and the "Remember password" option has no effect. What can I do to avoid this manual step every time?

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• Shouldn't WP8 Emulator Work With an Intel Q9650?

  - by Al Bundy

  My comp is as follows: -Windows 8 Pro -Visual Studio 12 Pro -Asus P5Q Pro Turbo -Intel Q9650 (Core 2 Quad 3.0 Ghz) As far as I can tell, this setup should support Windows Phone 8 Emulator, but When I installed Windows Phone 8 SDK, it said that my computer doesn't support hardware virtualization. It says here that it does: http://ark.intel.com/products/35428/Intel-Core2-Quad-Processor-Q9650-(12M-Cache-3_00-GHz-1333-MHz-FSB)

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• DNS queries to compromise DNS cache [on hold]

  - by Chris

  The transaction ID for DNS queries can take values from 1 to 65,536 and my computer pseudorandomly chooses one for each DNS request. If I sents 1,024 false replies per request, how many requests should I trigger to compromise the DNS cache with probability 99%? or as close tot hat as I can get. Thanks I'm getting a result of .6 requests which doesn't seem right to me. Feel as though it should be around 30

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• ubuntu downgrade from lucid to karmic

  - by solomongaby

  Hello, I was foolish to upgrade my computer to lucid, and i got into a lot of errors, it will not boot proper the display. This is why i want to downgrade back to Karmic. Do you know how can you do this ?

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• How to get Vista SP1?

  - by Luke

  I went to the download page of Microsoft to download sp1 for vista and it tells me to install it from windows updater on my laptop, but when I go onto that, it just displays an open window saying "The page failed to load". Should I just download it of the website and install it or will that stuff up my computer?

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• Graph paper like drawing software

  - by Algorist

  Hi, I have a college assignment, where I have to draw diagrams of voronoi, delaunay, minimum spanning tree etc for the college. I want to do that in computer. I searched in google with no luck. Is there any good graph drawing software you are aware of? Thank you Bala

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• How long do Lithium Ion batteries normally last?

  - by Zifre

  On the laptop I have, I've had to buy a new Li-Ion batter roughly every year. I do use this computer quite a lot, but I'm wondering if this is normal. Right now, my battery is completely dead (it lasts for about 0.1 seconds), so I plan on buying a new one soon. Is there anything you can do to prevent Li-Ion batteries from going dead so quickly?

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• OSX Samba Server

  - by Chris Maness

  Hello I have a MacPro that I'm using as a local file server. I mapped a directory on the secondary hard drive of the MacPro as a drive on our local Windows box. It worked fine for about a week and then suddenly stopped working. The windows computer gives the error that it's an invalid username and password however I have checked and double checked to ensure that the user and pass are correct to no avail. Anyone have any ideas on what's going on here?

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• Unable to install sbs 2008 in DELL POWEREDGE T100 [closed]

  - by Swaminathan Shanmugam

  Still unable to install WIN SBS 2008 in DELL POWEREDGE T100 server and the long post is going on at http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/aa1bc4b0-943e-4ada-8de1-e03161c8fc2c My problem is unable to install sbs 2008 in 500 GB 4k sectors hdd but installation is successful in 512 bytes sector hdd. Anybody please help to solve this issue? Installation of SBS 2008 proceeds ; atlast it is not getting completed with the error message "Windows Setup could not configure Windows on this computer’s hardware"

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• How can I run a speed test for Netflix and Hulu?

  - by Brennan Stehling

  Since the FCC rules were struck down I have noticed that Netflix and Hulu often stall on my Time Warner home connection. I've heard others are experiencing the same delays. I use Speedtest.net regularly from my computer and phone to check my connection and typically at home I get 10 to 15Mbps and occasionally higher. Currently it is around 10Mbps yet Hulu is stalling. Is there a way to specifically test my speeds for streaming Netflix and Hulu?

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• How to get rid of superuser`s password?

  - by eleonora

  My father put a new superuser password on my laptop, and now i cant access my computer without him putting the password in. I am really helpless. How can i get rid of his superuser control? Can i delete or change the superuser thing? Please help!!!!

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• Virtualbox completely disabled my ethernet and wireless network connections

  - by Tawani

  After installing VirtualBox 3.1.6 for Windows, my computer's network connections were completely disabled. The wireless isn't working, not even the ethernet landline. Even "ipconfig" doesn't seem to respond to any commands. Can anybody help?

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• Sound muting programmer for Windows?

  - by Marta

  Hi, sometimes when I go to sleep I leave the computer playing some music, but I'd like to tell it, once X minutes have passed just mute the volume. Does anyone know of a program to do so? I'm targetting Windows 7 here but I guess anyone for Vista will do equally. Thanks.

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• Is UPS necessary to have for PC?

  - by Jitendra vyas

  Can my computer components ( Monitor, Motherboard, RAM, HDD, CPU, SMPS) become damaged due to a sudden power flux. It's only needed to shut down Windows properly. Can I solve both Hardware and Software problems without UPS?

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• How to change default runlevel of Ubuntu (lucid) ?

  - by Adnan

  I have Ubuntu lucid on my home computer. Today I was experimenting with runlevels and I couldn't figure out how to change the default run level of Ubuntu. I can do that using /etc/inittab on Debian 504 but that file is not there in Ubuntu. I have searched on the web but couldn't figure out the answer. Thanks in advance.

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• Connect to a network via the command line

  - by justasking

  I want to be able to connect to a network via command line in Windows. My goal is to script out remoting into my work computer. I hate having to always manually connect to the VPN connection and then rdping into my work machine. I want to just have a script which will do both of it for me. I know how to rdp via command line, I just need to know how to connect to my VPN via command line.

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• Is it possible to limit how much CPU a virtual machine can use with VMWare Player?

  - by Raz

  Is it possible to limit how much CPU a virtual machine can use with VMWare Player? I use VMWare to run a Windows XP virtual machine. I want to keep it on in the background all the time. The real computer runs Windows 7 and is sometimes a little bit short of memory. That's why I want to check if I can throttle the VM down to the bare minimum to keep it running in the background constantly without interfering too much.

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• Disable Outlook 2003 splash screen when auto-starting

  - by serhio

  I want to hide the splash screen of Outlook 2003. I currently have it set to auto-start and hide to icon. Every time I start my computer I see the Outlook splash screen which makes me think that it's slowing down the OS to become "operational" after startup. What do I change in settings to not have the splash screen display on startup?

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• 0x0000007b vista harddrive swap

  - by unknown (google)

  I swap my hard drive to a new computer with vista 32 I get 0x0000007b stop error on bootup I tried using the cd to do the repair but it fails. I think it is because I have the wrong hard drive driver install for vista or it is missing. How can I fix this from the command line

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