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  • How to find polarity of a power supply that's lacking the customary markings

    - by Nosredna
    If I have a power supply (not a computer power supply, just a battery-replacing wall wart) and it doesn't have the usual polarity marking, how to I know if the tip is positive or negative? Update: I couldn't find my multimeter. I did find a model number on the power supply and typed it into Google. Some guy selling a bunch of power supplies on eBay had checked it and found that it was tip positive, which is what I needed!

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  • Windows 7 Goes to Sleep in conflict with Power Option Setting

    - by Decker
    My Del Dimension E521 running Windows 7 puts itself in sleep mode each night -- despite the fact that I have chosen a power option that specifies NEVER Each morning I find the monitor blank and I have to hit the power button on the PC at which point Windows "resumes". The system event log shows this: Source: Microsoft-Windows-Kernel-Power Date: 3/27/2010 3:21:10 AM Description: The system is entering sleep. Sleep Reason: System Idle My specific power options are: Turn off Display : 20 Minutes Put the computer to sleep : Never Is there some other setting coming into play here?

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  • Latest AutoVue Podcast - Customer Success at Ringhals/Vattenfall

    - by pam.petropoulos(at)oracle.com
    Ringhals, a Swedish nuclear power plant, part of the Vattenfall Group, produces 20% of the country's electricity and is the largest power station in the Nordic region. Ringhals has standardized on AutoVue for most of their engineering and asset document visualization requirements throughout their plant maintenance, design and engineering operations. This audio interview, hosted by Folia Grace, Oracle Vice President of Application Product Marketing, features Harald Carlsson, Documentation Administrator at Ringhals/Vattenfall. Hear Harald describe how they have cut IT maintenance costs, increased productivity, and improved maintenance operations throughout their facility. Click here to listen to the podcast

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  • Power Management - Sleep / Wake up Server when accessed

    - by KP65
    I have a headless HP Proliant Microserver with ubuntu installed. This machine has samba shares on it serving media and I usually rdp or ssh into it. Now my issue is I want the machine to go into sleep mode(so the state is saved from ram to the harddrive) and it will seem like it is turned off after an hour of idling. If there is any attempt to access the samba share through LAN I would like it to wake up. Now my motherboard supports this function, can anyone point me in the right direction for achieving this easily? Thanks

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  • How to make 8.04's screen saver enter screen into standby?

    - by Android Eve
    I am using Ubuntu 8.04 and despite using 'gnome-power-manager' to set dpms_method_ac to 'off' for backlight, the screen will not enter standby after set time. Also, "Put display to sleep when inactive for:" (via System-Preferences-Power Management) is already set to 1 minute. Interestingly enough, this only happens when I am logged in. When I am logged out, the screen does go into standby after set time. So I know it's not the screen... Any idea how make Ubuntu 8 screen saver enter screen into standby, while logged in?

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  • Simple Python Challenge: Fastest Bitwise XOR on Data Buffers

    - by user213060
    Challenge: Perform a bitwise XOR on two equal sized buffers. The buffers will be required to be the python str type since this is traditionally the type for data buffers in python. Return the resultant value as a str. Do this as fast as possible. The inputs are two 1 megabyte (2**20 byte) strings. The challenge is to substantially beat my inefficient algorithm using python or existing third party python modules (relaxed rules: or create your own module.) Marginal increases are useless. from os import urandom from numpy import frombuffer,bitwise_xor,byte def slow_xor(aa,bb): a=frombuffer(aa,dtype=byte) b=frombuffer(bb,dtype=byte) c=bitwise_xor(a,b) r=c.tostring() return r aa=urandom(2**20) bb=urandom(2**20) def test_it(): for x in xrange(1000): slow_xor(aa,bb)

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  • What does I.T.E stand for when it comes to power supplys?

    - by i-moan
    I wish I could give you more but I have a AC adaptor which I am trying to find ( as it's ... erm kaput ) and it has only a I.T.E power supply number. I can't seem to find where this acronym comes from. Also I wonder if there is a guide to the types of output socket connectors there are as I can't seem to find one that looks the same as mine ( 4 pin male output socket ). Thanks everyone

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  • Blinking motherboard power LED

    - by Corey D
    I was just rebuilding an old desktop PC to be used as a HTPC and the LED on the motherboard that indicates when there is power is blinking fairly rapidly. The only way I can get the machine to boot is to press the power button immediately after plugging it in, and even then I cannot make it into the BIOS. The power supply has more than enough juice to power all of the components, and is from a reputable manufacturer. The motherboard is an Asus and is about 4.5 years old. Is my power supply hosed? Or is it my motherboard?

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  • Will this car adapter power this Laptop?

    - by CT
    I'm looking to buy a number of car power adapters to be used with some Dell laptops. http://www.cdw.com/shop/products/default.aspx?EDC=1382005 ^ This is the item I am currently looking at. Will it be able to power a Dell Lattitude E6500? Looking at the power supply of the laptop, it states that it is a 90W-AC Adapter. The car adapter states that it is a 60W DC - AC Power Inverter. Will this work? Do I need an DC-AC Power Inverter that is 90W or higher? I am nothing close to an electrician, please help me out. Thank you.

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  • Choosing A Power Supply [closed]

    - by Geeks On Hugs
    Possible Duplicate: Power Supply Capacity Formula How can I check if my system needs more PSU power? I'm not sure if it's OK or not to ask a hardware question here. If not please let me know a good place but I've always got good info here so I thought I'd give it a shot. I'm custom building a new workstation for coding (Linux/Eclipse). How do I determine how much power the power supply needs? I'm building a mini ITX system on a budget and so I need to get as small as possible that is sufficient. I'll have a mini itx mobo with on board wifi and bluetooth, 8 GB RAM, an Intel i3 3.1 Ghz processor, 64 GB SSD and a slim optical drive. In the future I might add a descrete GPU, 16 GB RAM, 128 GB SSD. What is the minimum power I need and how do I calculate that?

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  • Computer won't start unless power is removed for ~5 minutes

    - by Paul Tarjan
    I have a fairly standard 2-year old desktop computer (quad-core intel, single hard drive, decent video card, 300W power supply) which recently started acting up. I'm not sure what the cause is, so hopefully you can help. Sometimes (once a week-ish) I press the power button and nothing happens. No blinking, no sounds, no nothing. If I remove the power cord (or flip the switch on the power supply) I hear a capacitor discharge. If I leave it in the "no power at all" state for about 5 minutes then I can put the plug back in and the computer works perfectly. What is the issue? What do you think I have to replace?

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  • Computer won't start unless power is removed for ~5 minutes

    - by Paul Tarjan
    I have a fairly standard 2-year old desktop computer (quad-core intel, single hard drive, decent video card, 300W power supply) which recently started acting up. I'm not sure what the cause is, so hopefully you can help. Sometimes (once a week-ish) I press the power button and nothing happens. No blinking, no sounds, no nothing. If I remove the power cord (or flip the switch on the power supply) I hear a capacitor discharge. If I leave it in the "no power at all" state for about 5 minutes then I can put the plug back in and the computer works perfectly. What is the issue? What do you think I have to replace?

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  • Intel hybrid graphics stuck in power save mode

    - by OZZIE
    I have an Asus UL30V with Intel hybrid graphics. When I bought it it used to switch to turn of the better graphics card to save power and run on a more power effecient one. When I connected the laptop to a power source again I could go to the intel graphics icon on the task bar and click on "switch to enhanced performance mode" or something similar. But like 2-3 months ago it suddenly vanished. I cannot switch modes anymore, it's gotten stuck in power save mode. I can change the windows power setting but that doesn't enable the better graphics card :( What should I do? I've tried restarting the computer and that does not work. I really hope I don't have to reinstall the drivers! It seems like other people have had the same issue: http://en.community.dell.com/support-forums/laptop/f/3518/p/19422695/19994601.aspx , he hasn't even got the same computer as me. I have windows 7 Home Premium x64 Any ideas?

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  • Blinking motherboard power LED

    - by Corey D
    I was just rebuilding an old desktop PC to be used as a HTPC and the LED on the motherboard that indicates when there is power is blinking fairly rapidly. The only way I can get the machine to boot is to press the power button immediately after plugging it in, and even then I cannot make it into the BIOS. The power supply has more than enough juice to power all of the components, and is from a reputable manufacturer. The motherboard is an Asus and is about 4.5 years old. Is my power supply hosed? Or is it my motherboard?

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  • Vista Power Management GPO

    - by Matt
    Hi, I've created a loopback GPO that has several settings (both computer and user) including a Custom User Interface (Access 2007 Application) and Power Management (has the computer sleep after being idle for 2 min). I'm also filtering so that this policy does not apply to "Admins" - only to "Users". The problem I'm having is when the "Users" login the Power Management settings don’t work, but they do for "Admins". For testing I'm allowing the "Users" to launch Task Manager and use the Run line, so I'll run Explorer and look at Power Management and it shows the settings from my GPO. So I created a test OU with copies of the aforementioned GPO, but removed the Custom User Interface and found the Power Management settings do work for both the "Users" and "Admins". When I add the Custom UI the Power Management settings break for the "User" but continue to work for "Admins". Do the Power Management options need to have User Interface be "Explorer.exe"? Is this a bug or am I doing this the wrong way? BTW the tablets are using Vista SP2. Any insight or advice would be greatly appreciated. Thanks, Matt

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  • Why does pulling the power cord then pressing the power button fix a non-booting PC?

    - by sidewaysmilk
    I've been working at this institution for about 6 years. One thing thing that I've always found curious is that sometimes—especially after a power outage—we find a PC that won't boot when the power button is pressed. Usually, the fans will spin up, but it won't POST. Our solution is to pull the power cord, press the power button with the computer unplugged, then plug it in and turn it on. It seems more common with Gateway brand PCs than the Dells or HPs that we have around. Does anybody know what pressing the power button does when the computer is unplugged? I have some vague notion that closing the power button circuit allows some capacitors to discharge or something, but I'd like a firmer answer to offer my users when they ask me what I'm doing. My best guess as to why fans can spin but it can't POST is that the BIOS is in some non-functional state. I don't know how BIOS stores state, but my best guess is that there is some residual garbage in its registers or something, like the stack pointer isn't starting at 0 maybe?

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  • How To Delete Built-in Windows 7 Power Plans (and Why You Probably Shouldn’t)

    - by The Geek
    Do you actually use the Windows 7 power management features? If so, have you ever wanted to just delete one of the built-in power plans? Here’s how you can do so, and why you probably should leave it alone. Just in case you’re new to the party, we’re talking about the power plans that you see when you click on the battery/plug icon in the system tray. The problem is that one of the built-in plans always shows up there, even if you only use custom plans. When you go to “More power options” on the menu there, you’ll be taken to a list of them, but you’ll be unable to get rid of any of the built-in ones, even if you have your own. You can actually delete the power plans, but it will probably cause problems, so we highly recommend against it. If you still want to proceed, keep reading. Delete Built-in Power Plans in Windows 7 Open up an Administrator mod command prompt by right-clicking on the command prompt and choosing “Run as Administrator”, then type in the following command, which will show you a whole list of the plans. powercfg list Do you see that really long GUID code in the middle of each listing? That’s what we’re going to need for the next step. To make it easier, we’ll provide the codes here, just in case you don’t know how to copy to the clipboard from the command prompt. Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e  (Balanced) Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c  (High performance)Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a  (Power saver) Before you do any deleting, what you’re going to want to do is export the plan to a file using the –export parameter. For some unknown reason, I used the .xml extension when I did this, though the file isn’t in XML format. Moving on… here’s the syntax of the command: powercfg –export balanced.xml 381b4222-f694-41f0-9685-ff5bb260df2e This will export the Balanced plan to the file balanced.xml. And now, we can delete the plan by using the –delete parameter, and the same GUID.  powercfg –delete 381b4222-f694-41f0-9685-ff5bb260df2e If you want to import the plan again, you can use the -import parameter, though it has one weirdness—you have to specify the full path to the file, like this: powercfg –import c:\balanced.xml Using what you’ve learned, you can export each of the plans to a file, and then delete the ones you want to delete. Why Shouldn’t You Do This? Very simple. Stuff will break. On my test machine, for example, I removed all of the built-in plans, and then imported them all back in, but I’m still getting this error anytime I try to access the panel to choose what the power buttons do: There’s a lot more error messages, but I’m not going to waste your time with all of them. So if you want to delete the plans, do so at your own peril. At least you’ve been warned! Similar Articles Productive Geek Tips Learning Windows 7: Manage Power SettingsCreate a Shortcut or Hotkey to Switch Power PlansDisable Power Management on Windows 7 or VistaChange the Windows 7 or Vista Power Buttons to Shut Down/Sleep/HibernateDisable Windows Vista’s Built-in CD/DVD Burning Features TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Gadfly is a cool Twitter/Silverlight app Enable DreamScene in Windows 7 Microsoft’s “How Do I ?” Videos Home Networks – How do they look like & the problems they cause Check Your IMAP Mail Offline In Thunderbird Follow Finder Finds You Twitter Users To Follow

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  • Computer can't boot

    - by zETO
    I have a 1 year old PC and the last weeks, when I press the ON button the PC doesn't power on ( Like I didn't press the ON button ). I have to plug and unplug a few times the power cord in order to make it work. At the start this happened once in 10 boots. Now it happens much more frequently to the point that when I press the power on button it never even opens if I don't do the cord switch thingy. Very rarely also, the PC shut downs for no reason and no warning, even when idle. The important fact to note here is, the green light on the motherboard is always on, even when the PC doesn't power on. What should I do? Is it a Power Supply failure or a motherboard? My power supply is a high end corsair model, AX850 and my motherboard a high end ASUS.

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  • Laptop accessories for mobile warrior (light power adapter & case/bag)

    - by wonsungi
    Lugging my X301 between work and home, I realized my laptop's accessories weigh more than the laptop itself! I'm ordering a 2nd AC power adapter so I don't even have to carry one at all, but I may as well get the lightest one possible. My X301 came with a pretty svelt 65W power adapter, but can anyone suggest a lighter power adapter or confirm the weights I've found below? mass vol dimensions W Model ---- ------- ----------- --- ------------------- 210g 149cm^3 108x46x30mm 65W Coolermaster [NA 65] 244g 189cm^3 140x75x18mm 65W ThermalTake [ADP65W0001] 260g 130cm^3 104x43x29mm 65W Lenovo (came with X301) 326g 198cm^3 145x76x18mm 95W Coolermaster [SNA 95] 330g 180cm^3 150x60x20mm 90W Kensington USB [K38030US] Apple's 60W power adapter seems much smaller/lighter than the PC products listed above, so I think a better PC power adapter could exist. There are much smaller 45W "netbook" adapters, but are these too weak for my X301? I would not mind if it just meant the battery couldn't charge while the laptop was on, but I am afraid there will be worse consequences. Also, I have decided to swap my Logitech Kinetik briefcase for a Tom Bihn Ristretto. Less protection, but much lighter, less bulky, and easier to carry. Any suggestions for better laptop cases/bags?

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  • How to power a serial port under linux?

    - by Lex
    I got a serial to ethernet device connected to a Serial (COM) port on a Linux machine (debian etch), I connected it correctly but it did not power up, I suppose I need to power the device port, anyone knows how to power it under linux? Thankyou in advance.

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  • Laptop Power down.

    - by BENBUN
    This question relates to my ACER laptop running Windows VISTA. Currently when I close the lid of my laptop the laptop does not power down, however when I open the lid it does. When looking at the power settings it is set to power down when closing the lid. The trigger to this seems to be the lid being opened not being closed. I seem to recall this behaviour changing when I installed Windows Media centre. Any ideas on how I can get the power down to work on the lid closing. thanks

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  • Laptop Power down.

    - by BENBUN Coder
    This question relates to my ACER laptop running Windows VISTA. Currently when I close the lid of my laptop the laptop does not power down, however when I open the lid it does. When looking at the power settings it is set to power down when closing the lid. The trigger to this seems to be the lid being opened not being closed. I seem to recall this behaviour changing when I installed Windows Media centre. Any ideas on how I can get the power down to work on the lid closing. thanks

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  • Too much power for 1-2 power outlets in my room?

    - by jasondavis
    I live in the USA, I am curious about plugging in too many computer items into 1 to 2 power plugin outlets. Most power outlets have 2 plugins, some have 4 and more though. Many people will plug in a power strib/bar into 1 of these outlets so that they can plugin even more items. So if I have 2 plugins near my computer, would it be bad to plugin... - My PC - 3-4 monitors - Stereo amp for PC sound - Lamp - External drives - other similar items

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  • Too much power for 1-2 power outlets in my room?

    - by jasondavis
    I live in the USA, I am curious about plugging in too many computer items into 1 to 2 power plugin outlets. Most power outlets have 2 plugins, some have 4 and more though. Many people will plug in a power strib/bar into 1 of these outlets so that they can plugin even more items. So if I have 2 plugins near my computer, would it be bad to plugin... - My PC - 3-4 monitors - Stereo amp for PC sound - Lamp - External drives - other similar items

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