Is my new PSU a duff one?

Gimpymoo

Gimpymoo

Gimpymoo

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I had a OCZ Modzstream delivered on Friday.

All seemed well initially, however, at random intervals, on desktop or gaming, mainly when gaming after varying amounts of time, the system hard locks and what was on the screen becomes garbled and split into fine horizontal lines and all I can do is restart the computer.

I have ran 3DMark Vantage several times, sometimes it runs, sometimes it repeats the error, one time the PC just restarted.

All temps appear to be within an acceptable range.

Windows Error log just mentions an "unexpected Restart".

Have tried using different PCIe cables and connecting to the alternate PCIe output on the PSU, the result is the same.

Thoughts?

Thanks.
 
Its fine, but it is best to burn an iso of memtest and run it after booting from cd in BIOS.
This way you can exclude anything windows and test the memory directly at the speeds you've set it to in BIOS.
It can be worth testing each stick individually.
 
What are your system specs? I have a feeling the psu is ok but can't supply enough juice to the gfx card. Gaming and pcmark stress the gpu requiring even more juice.

It could be the gfx card but if u post your spec we can help further
 
Sorry, I should know better and should have put specs in op.

OCZ Modxstream 600w
AMD PH2 X3 720BE @ stock 2.8Ghz
5770 1GB @ Stock
2 x 1GB DDR3
2 X 2GB DDR3
5 x HDD's
1 x optical drive
 
Hikari, the Win7 memtest runs outside of Windows. Initiates after a reboot.

91% through an "Extensive" RAM test and no errors so far.
 
Hmmmm well it's not what i originally thought as that PSU should power your gfx and whole system comfortably.

There have been a number of threads with people having issues with the OCZ modxstream PSUs. Can you not borrow a PSU to eliminate it as the source of the problem. To your advantage the overall power consumption is low so a lower spec'd PSU should be ok to test (did the gfx card come with a molex power adapter?).

It could be memory related but it's strange the BSOD didn't point to it if it was. You can try different combinations of the RAM to see if they are causing problems, maybe adjust the timings in the bios.

Hope this helps, let us know what you find
 
There is not a "BSOD", the system just locks with a corrupt display and once the whole system just restarted when running 3D Mark Vantage.

It is not a "new" build.

I have simply upgraded the PSU , however had no such issues under a much lesser PSU.
 
Memory errors usually incur a BSOD that is what I meant. Well then swap back to your old psu and see if it resolves it. If it does then RMA the new PSU
 
I upgraded the old PSU after it was failing to POST with everything plugged in.

Is it safe to run the GPU from a seperate PSU to the rest of the system?
 
Well if the old PSU died there is a chance it has damaged components on it way out.

Start by trying to find a PSU to test the whole system on, or RMA the OCZ PSU. If that doesn't cure the problem start investigating the memory. A memory test is a good start but failure of the memory test could also be a mobo fault not the RAM itself.

Sorry it's not the cleat cut answer you were looking for......welcome to the "joys" of troubleshooting

Best of luck
 
Extensive RAM test passed without errors.

No onboard VGA.

Reinstalled Windows, seems to be more stable although just froze while playing a game but none of the screen corruption as previously.
 
Purchased myself a multimeter which I should have purchased years ago as it would have came in useful for a few things.

The 5v rail is showing as 4.9.

That is will within tolerance I would assume?
 
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