Frequent Restarts

Hello everyone,

Yesterday I experienced 3 restarts in a short space of time. I took the minidump files onto a memory stick before reverting to a manually created restore point (created on 30th May). I also have a restore point just before a windows update was installed on 24th and 25th May but havent gone there yet.

Everything seemed fine when I done this at 11pm last night and used it for a bit to check if it happened again.
However, this morning after loading fine and using for a short time the it went into screensaver and then sleep mode whilst I was busy. Unfortunately, It seems like it has restarted itself again.

PC Specs: (Anything else needed just say)
HP p6740uk
AMD Athlon II x4 640 (3.0 GHz)
AMD 760 G chipset
4GB DDR3 memory
NVidia GeForce 405 (1GB)

After using some online and downloadable .DMP analysers I saw things like VISTA_DRIVER_FAULT and ntoskrnl.exe problems. But I have no idea what to do now.

I have a feeling it is video card driver issue, windows update effects or a damaged PSU (happened before on different PC).

I have attatched the dmp files from yesterday (dmp_files_7) and today (dmp_files) and the CPU-Z images.

Any help will be greatly appreciated.


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