Possible PC problem...

[djkav]

I have some strange PC problem happening.

• Multiple rebooting when powering up
• Random reboots whilst running
• USB devices randomly unplugging/plugging themselves within windows

My first inkling is the mother board, or maybe the overclock?

Any ideas?

 

[djkav]

Something else I failed to mention:

It reboots when I start a game, it happens just after logging into Wildstar (beta) and World of Tanks.

Its only just started to misbehave like this in the last 2 weeks.

No errors in the event logs. Just the usual "Computer restarted unexpectedly".

BIOS defaults now reloaded. Will retry.

UPDATE:

Well tried optimised defaults. Rebooted just after logging into World of Tanks.

- Screen goes black, like loss of video signal.
- Seconds after, sound starts to freeze and stutter.
- Seconds after that, the system reboots.

Could this be a GFX card problem, or motherboard?

 

[djkav]

Bugger, had about 7 random reboots during windows.

One was an uptime of only 12 secs

I guess something isn't stable. Will see if volts are available in bios.

 

[djkav]

have you tested with cpu/vtt between 1.10v and 1.15v?

Yup, same problem. Even took off the OC and still random reboots

At present, the BIOS says:

3.3v = 3.284v
+12v = 12.240v

Will sort out a memtest. How long, and what test is best for that?

 

[djkav]

I think it could be the GFX card. As now it appears the computer stays running, and I just get a black screen, and the monitor light turns orange as if its go no video signal. I have to hit the PC reset to reboot and the display returns.

I have switched the monitor to the IGP and it seems to have stopped the black screen. I also get a random horizontal line that keeps appearing in different places on screen when thru IGP.

 

[djkav]

I guess im gonna try a new PSU first and see how that runs.

 

[djkav]

I have been running stable on the i5 IGP and i swapped out the gtx580 and put in my spare AMD 6850. Both have run the OCCT PSU test without any issues.

With the gtx580 in, I just got a black screen and frozen PC before the test started properly.

Graphs running with AMD 6850.

Graphs running with gtx580, its managed to stay running with only a reboot when it first powered up.

Any assistance is welcome.