oh thanks for your help iand one more thing my gpu power voltage .8mv is that a problem
Created an account to give some insight.
It looks to me that you're having a single rail/multi rail configuration issue.
Essentially, you are running the cpu and gpu in a single rail, that coupled with the distinct lack of overhead for your machine causes the power supply to cut power without any prior warning or data to show.
I suggest going for a slightly more efficient power supply and ensure it has multi-rail capability. In general you would need about 20-30% overhead on your power supply AT max load.
Data I am using: The fact that your PC shuts down at full load (you could try to blender it and double check.) The wattage and type of power supply you own. The power draw of the I7 and the GPU. Prior experience with the same issue using even a corsair PSU.
I suggest testing prior to upgrading the PSU using blender and putting your PC in a full-load situation. This will have two effects, this will show you any voltage drops in the 12v line, as well as allow your PC to reach it's full load without any possibility of data loss.
If your P.C. reboots without any error codes in the event viewer, It's most likely the power supply not meeting the needs of the fully loaded PC.
This won't be super obvious, you really have to rely on your gut.
Stable otherwise, unless fully loaded, is almost always a PSU power management issue.