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Computer shuts down randomly 2-3 times daily

This is a discussion on Computer shuts down randomly 2-3 times daily within the Windows 7 , Windows Vista Support forums, part of the Tech Support Forum category. I'm running Windows 7 64bit and having some very strange errors. I have new RAM, a new video card, and


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Old 09-20-2011, 02:20 PM   #1
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I'm running Windows 7 64bit and having some very strange errors. I have new RAM, a new video card, and a new Cooler Master PSU; I've ruled out the RAM already since it did the same thing with another new stick. I don't have a different PSU to test, sadly.

Now, when I installed Windows 7, there were some issues. I was installing to what was originally Drive F, which then became Drive C with the new install. Some boot files ended up on Drive D (Formerly C) and had to be copied over or I had weird boot errors. If there are any missing files that might cause what's happening, please let me know. But I ran SFC and it brought up no problems.

So, what happens is that when I'm just using the computer (blogging, photo editing, playing a game, doesn't seem to matter what I'm doing) it will shut down, as if the power just went out. I still hear things working in the case, either fans or the PSU, after the shutdown. Not just for a few minutes either, there will be 'activity' in the case for hours after it supposedly shuts down. When I press the power button on the front of my case, nothing happens, no LEDs, nothing. If I hold it down for 5+ seconds, nothing happens. I have to flip the power switch in back off and on, then press the front button. Sometimes my USB keyboard won't be recognized during boot and I have to unplug it and plug it back in.

The only error that seems to show up in event logs is a kernel-power one letting me know that the computer shut down unexpectedly, which I already knew.

Bonus: Sometimes after I've restarted, my PC won't create an internet connection; I'll get the connection logo in the tray with the red X. After restarting again, it typically connects without issue.

Also: I ran CoreTemp overnight and it showed no signs at all of overheating.
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Old 09-20-2011, 02:51 PM   #2
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This sounds like your power adapter is failing or about to fail. Post your PSU wattage and make and model #.
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Old 09-20-2011, 03:01 PM   #3
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Amazon.com: Cooler Master GX Series 650W ATX 12V V2.31 80 PLUS SLI Ready Power Supply RS650-ACAAE3-US: Electronics

This is the one I purchased no more than a month ago.
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Old 09-25-2011, 09:37 AM   #4
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I've recently had a similar problem with a brand new Dell 8100. After days of trying to sort it I stumbled across an obscure post on a forum suggesting that I disable the hybrid sleep setting on my power plan. Done it and the machine has been stable since. I'd suggest you try that:

Control Panel > Type 'Power Options' > Choose "Change Plan Settings" for whichever plan you are currently using > Change Advanced Power Settings > Sleep > Allow Hybrid Sleep - set this to OFF.

Some machines will automatically vary the power plan so you may wish to disable to this on each of your machine power plans. Hope this helps!
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Old 09-26-2011, 12:38 AM   #5
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Thank you. I forgot to update that I'd fixed the problem and it was indeed the power settings. I'd just changed the overall settings to 'performance' or whatever the least energy-saving option is, which most likely included the fix you mentioned. :)
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