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PC Randomly freezes and black screens

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Old July 18th, 2010, 11:56 AM
phyregold phyregold is offline
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PC Randomly freezes and black screens
Hi guys, first post I was hoping you could help me out.

What I have going on is this:

I'll leave my PC on for a few hours and all of a sudden my PC will lock up. The screen's will go black and my mouse and keyboard will stop working. Heres a key, I have a USB mouse and the lights will go off on the mouse.

I have hibernation turned off
I have screen saver turned off

All power seems to stay on the machine but nothing is working and i have to power cycle for it to come back. Now I noticed this happening as soon as the air conditioning came on in the house. So i went and bought a UPS, but that has not fixed the issue. I've monitored my CPU and it's far from over heating. I have the log constantly written out to see that. I was using Core Temp for that.

Any thoughts or suggestions?

My error log is empty, so i'm not sure at this point...
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Old July 18th, 2010, 01:39 PM
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well first off you need to list your current specs, otherwise we have no idea what we are looking at. It may be caused by a feature enabled in the bios, such as AMD's cool n quiet mode, which allows the chip to run at reduced clock speed and voltage to save power, heat, and noise. And these systems are designed to kick in when the system is idle, as thats when you will not be needing the full power of what you have in the box.

But my first thought would be the power supply, the UPS should ensure that the pc is receiving consistent power but its possible the power supply was damaged in a past surge and could be acting up this way.
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Old July 18th, 2010, 04:09 PM
phyregold phyregold is offline
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Specs
HDD:WDC WD2500JS-22NCB1 320GB
Video: NVidia GeForce 9500 GT 1GB
Network:RealTek RTL8139 Family PCI
Processor: AMD Phenom II X4 925 processor
Sound: On Board
Power:Thermaltake TR2 430W Silent Power Supply Black
Motherboard: ECS A780GM-A AMD780G Socket AM2+ Motherboard

500 Watt UPS.
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Old July 18th, 2010, 04:34 PM
phyregold phyregold is offline
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I forgot, windows XP.

I've done 3 things...

Added a UPS - which I know didn't fix it.

Updated video drivers
Disabled AMD C&Q.

But i'm almost postie the C&Q inst going to resolve it cause i've been using it before and instead of just freezing it would cycle all the way and reboot
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