[Invalid] Handbrake Shuts Off my PC

[MuffinManYT]

Please describe the problem in as much detail as possible:

So im using handbrake to compress a video (mp4) size so its not large for YouTube. but while its almost finished my computer shuts off forcefully and the process is never finished because it always happens
What are the steps to reproduce this problem:

What version of HandBrake you are running:
0.10.5
What operating system and version and you running (e.g. OSX 10.11, Windows 7, Ubuntu 14):
Windows 7 Ultimate 64bit
Installed Physical Memory (RAM) 8.00 GB
Total Physical Memory 8.00 GB
Available Physical Memory 0.99 GB
Total Virtual Memory 16.0 GB
Available Virtual Memory 8.65 GB
Page File Space 8.00 GB
Page File C:\pagefile.sys



If there was any exception or error displayed, please copy it and paste it here:

Please include the scan or encode log:

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 Paste your log here between the code brackets, or use a pastebin website. 

[s55]

I'm afraid this isn't a software bug. It's a hardware fault.

The usual suspects are:
1. Bad or weak power supply. (You may see similar behaviour running something like Prime95 but it's not quite an intensive a work-out as HandBrake so it doesn't always show up)
2. Bad Memory (Test with Memtest86 to rule out)
3. Overheating of components that don't have thermal throttling support. (Get a temp monitor app to see if anything looks out of place. Anything >70C is suspect)

and if it's BlueScreening before restarting
4. Bad Drivers on the system.