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Computer Turns Itself Off

Last response: in Systems
August 5, 2013 12:10:12 AM

HI Everyone I'm new here and wasn't sure what category to put this in im 15 and love messing with computers but here's my issue I bought a computer at a yard sale recently the power supply was bad and hard drive was missing files so I replaced the harddrive and got a new power supply and I installed windows and recently it turned on but no video! So I finally replaced the video card and it worked but my issue is that it just randomly turns off after about 30 minutes the green mobo light is still on and it will turn on again if I press the power button I have a old Sony Vaio Thanks For Your Help!

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August 5, 2013 12:21:14 AM

I believe your issue may lie with either the Motherboard or the PSU you selected. Does the motherboard produce clicks or beeps once it powers off? The green could mean that the board is receiving power. I would consult the previous owner if you have any means of doing so.
I think posting the current system specifications could help others aid you more easily as well. I'm sorry I can't help but I'm sure someone here will understand what you are experiencing.
August 5, 2013 12:45:33 AM

I have tried 3 different working PSU's same issue! There are no beeps when turning off
I got these specs online: Sony VAIO Digital Studio RZ44G
Windows XP Media Center Edition 2004; 2.8GHz Intel P4; Intel 865PE chipset; 512MB DDR SDRAM 333MHz; Nvidia GeForce FX 5200 128MB; Hitachi HDS722516VLAT20 160GB 7,200rpm
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August 5, 2013 10:01:26 AM

So last night I took it out of the case and put a large fan in front of it too cool it down because the Temp Of one of the components was 140 degrees Fahrenheit and the computer was still on this morning when I woke up and the temp was 117 but as soon as I started doing something it went back up again

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August 5, 2013 12:16:49 PM

Ah, that would be a simple fix then, get some heatsinks and cover it up. You may have some very bad airflow within your case going on.