Complete power failure when using video editors...?

No clue if you can help with this but any pointers would help. So I'll start off by saying that I do YouTube videos for gaming, and I've used both VideoPad Video Editor (2.41) and Sony Vegas Pro 12 (build 3xx) for editing and rendering. The first problem I thought was a coincidence. I was downloading a music file from Chrome (which was open to YouTube) with VideoPad in the background, simply idling, when the PC just hard shutdown on its own. (Only had VideoPad, Chrome, and a folder window open) Me thinking it was a coincidence, I turned it back on and went back to doing the stuff from before. The problem only arose again last night when I decided to do a test render with Vegas 12. Only a four minute clip, I told it to render and walked out of the room. When I came back, the PC's power was off. Turned it on again, told Vegas 12 to render again, and the same thing happened, power failing at less than 10% complete. The thing that really makes me scratch my head is that all the diagnostic tools I knew how to use, including reliability history and event viewer, tells me nothing useful. The only event logged is that the previous shutdown was unexpected. No technical details were given. There is no BSOD, it just simply loses power. I have a feeling that this is related to my PSU.

Not really my area but the freeware HWiNFO, HWiNFO32 & HWiNFO64 - Hardware Information, Analysis and Monitoring Tools will allow you to monitor your PSU voltages and if there is a glitch just before the shutdown or when working in Vegas pro - if so we can move your thread to a hardware section for better help

How old is the power supply?

If you use the tools that Barman58 suggested, they will definitely tell you if you have a voltage going south on you, but you may have to actually use a meter and measure the voltages to be completely accurate. Sometimes software gives false readings of the voltages.

Also, use the programs that Barman58 suggested to monitor your temperatures as well. It could be that the stress of rendering is causing your CPU temp to go too high. The computer will shut down as a result of that. Open the case, and make sure that your CPU fan is turning properly and isn't caked by dust.

Moved from software to hardware

The power supply was brand new, bought this past July. However, I conducted my own test using SpeedFan, (unsure how reliable it is for reading temperatures but it was recommended by my instructor) and used it to monitor the CPU temp before and during rendering. Before, it kept within 100-110 degrees. While rendering however, it gradually rose up to 180+ before finally killing the power. I think I found the problem... And late reply...

MrMii Win 7 do you mean 180+ degrees Celsius?

If it's getting that hot, it's likely shutting down to reduce damage.

What kind of cooling do you have? And check to make sure that your heatsink/fan is mounted properly and the fan is working.

Layback Bear said:

MrMii Win 7 do you mean 180+ degrees Celsius?

Jack, I would assume, (and Hope), that these are Fahrenheit temperatures 180° F is seriously hot 180° C is an oven Temperature - useful for steaks but not so for a PC

Another option could of course be a sensor issue, but the cut off happening would tend to exclude this

By 180 degrees I mean Fahrenheit. If it could reach that in Celsius before shutting down, I'd be amazed and wonder why Vegas made it get that hot in less than two minutes (356 F). Jokes aside, I'm only using the stock fans that my CPU and case came with. I would implement water cooling but that's a pain and I don't have the space in my case to put such a setup. And as far as I know, the CPU fan hasn't stopped spinning, even the moment before it kills the power. My only guess is that they can't spin fast enough to cool it down. Or...something... My mom says that I should clean out the fans, and although she's right, I think it goes beyond that.