Hi,
over the last 7 days Ive been experiencing unforced shutdowns of my system.

I checked the event log and its related to a critical event: Kernel Power, Event 41, Task category (63).

I had a look on the web and their are loads of "fixes", but I havent come accross a thread that led to someone saying the prob was resolved.

Anyhow this is what Ive done so far:

1. Possible driver problem - No messing about: reformat SSD and HDD - reinstall Win 7 and basic software (mobo/gpu) -

2. Possible Mobo/GPU/PSU problem - reset mobo back to standard settings - run OCCT test to check CPU/PSU/GPU - No errors -

3. Alter power management plan so pc doesnt sleep/hibernate -

4. Set power plan to high performance

5. Change power management on new gaming keyboard , swap keyboard to make sure (paranoia)

6. Check no duplicate audio drivers.

7. ran Unigine Heaven to give the sys a shakedown.

Its quite frustrating because I cant narrow it down to hardware or software.

On the 3/1/2013 it powered down (and restarted) with this error 10 times between 01:25am and 10:52am, however it had stayed stable

prior to that and hadnt powered down since 15:16 on the 2/1.

So u see it appears random (nothing is random in computing) with the time stamps and no pattern emerging prior to Error 41.

I hope someone can help as Im reluctant to start ordering parts when I dont know what the problem is.

Many Thanks

Still no luck, just built a new trinity PC and had a fresh copy of win8 so put it on my problem i5 pc and the retail copy of win7 onto the new build.

Still getting the unexpected shutdowns, Event ID 41, Task category 63.

Not as frequent...but still alarming and cant pin them down.

it might be irrelevant but run memtest?

Thanks for idea Holy.

Memtest run, no errors found.

Another thing ticked off the list.

Can you upload the minidump file of the BSOD for us?

Hi I've found the location of the minidump file and installed WDK for win8, not sure how to utilise it though....