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System freezing at random times

Built a new gaming rig, screen sometimes goes black, sometimes black with gray lines. This is all at random times... i could be playing a game, or just surfing the web. this is the only CRITICAL error in event log:

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 1/22/2012 1:17:42 AM
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (2)
Computer: Jim-PC
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Event Xml:
<Event xmlns="">
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
<TimeCreated SystemTime="2012-01-22T07:17:42.699603800Z" />
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Security UserID="S-1-5-18" />
<Data Name="BugcheckCode">0</Data>
<Data Name="BugcheckParameter1">0x0</Data>
<Data Name="BugcheckParameter2">0x0</Data>
<Data Name="BugcheckParameter3">0x0</Data>
<Data Name="BugcheckParameter4">0x0</Data>
<Data Name="SleepInProgress">false</Data>
<Data Name="PowerButtonTimestamp">0</Data>

This is because i have to reset with the power switch. As far as i can tell all drivers are up to date. tried unplugging monitor and plugging back in when it happens, doesnt help. tried windows key>u>r>enter doesnt restart. Ran memtest 86+ with no errors. Overheating is out of the question, all temps have been recorded when the error occurs and are normal. Volts are are normal in bios. tried system at stock settings and it still crashed. I THINK this is all i have tried so far, but i may have tried other solutions. ALL of this hardware is brand new. this is what im running.

ASUS Sabertooth 990fx mobo
AMD 1100T BE
8GB Corsair dominator ddr3-1600 ECC mode off in bios since this is non ecc memory
Sapphire Radeon HD6770
OCZ Agility 3 SSD - 90GB - OS and SWTOR/programs
WD caviar 160 storage drive - currently empty (only old part of system)
ASUS DVD burner
Corsair HX-750 PSU 80+
Antec LanBoy air case grounded to PSU case as per instructions
Running REALLY old pci wireless card, but dont see where this could cause the issue.

Like i said before, overclocked or not, same thing happens.
Running W7 home pro SP1

I am really at a loss as to what else to try, dont have a spare GPU or i would try that. ANY ideas would be greatly appreciated. Thanks in advance guys.
12 answers Last reply Best Answer
More about system freezing random times
  1. Hi does the PC BSOD At Any Time?.
  2. i never get BSOD, only blackish screen with grey lines down it. Hasnt happened for hours now, luckily. on a side note, my voltages drop below spec(ie 12v, 3.3v, 5v) it will be like 12v=11.992 or 3.3v= 3.288 or 5v=4.992 is this normal or may i have gotten a bad PSU?
  3. this is for the power supply volts are ok but i would check the graphic card in another mobo or try another graphic card to this mobo the if same result check monitor
  4. well, it used to happen every hour or so, and now stopped. i flashed most recent bios and a few other small things. going to try overclocking again and see if the problems return.
  5. monitor is also brand new, lol. bought on 1/21
  6. did you google that Microsoft-Windows-Kernel-Power
  7. yeah, didnt give me much. something wierd though, i just went to plug a headset into the front audio jacks and the screen went black instantly, cpu froze. restarted, reinserted the mic/headphone cords and it didnt lock up that time.
  8. Thats starting to make me think the ground from the front panel connections may not be good enough... might have been that the whole time. am i wrong in thinking this?
  9. Best answer
    could be the ground or another cable tha shorting from the front panel you could use a volmeter to check ground and voltage on this
  10. Best answer selected by senjurio.
  11. It was either the ground from the front panel, or the processor wasn't getting enough voltage, either way its fixed now. Thanks for all the help!
  12. This topic has been closed by Mousemonkey
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