PC freezes, stops responding, a problem with sensorview device!

No, there's no indication that any particular component is at fault.
The missing events are suggestive of a Windows problem, but could just as easily be a hardware problem.

You can still perform the first 3 steps without losing anything - but backup anyway (just in case).

If I had to guess, I'd say this was a Windows problem. But if it occurred in Vista and in Win7, then I'd have to guess that it wasn't a Windows problem.

So, there's 2 ways to proceed IMO:
- clean install Windows, or
- start swapping out hardware piece by piece

While it's likely that this is a hardware problem, it's a BSOD event that can also be blamed on the video driver. I've mentioned the troubleshooting steps for the STOP 0x117 errors in my previous posts - have you tried any of them? If so, then it's time to try another video card. I'd suggest borrowing one - but if you can't borrow one, then purchase one from a store that will allow you to return it (in case it's not needed).

I'm having some problems with my eyes now (I have an eye disease), so I may be repeating some things - feel free to let me know.

Have you:
- checked the fan on the video card? Is it working?
- checked the airflow through the video card's cooler - is it clogged?
- checked the power to the video card - is it firmly connected?
- checked the temperature of the video card?
- have you tried running the system with the side of the case open and having a house fan blowing into the case? Does that help?

Still, the most sure-fire test would be to replace the video card. If the video card is built into the motherboard on your system, then you'll have to disable it in the BIOS after you've installed another video card.

I use this test (the open case test) whenever I can't get a temperature reading on a video card. It is surprisingly effective with an overheating video card.

I also use the finger test - BUT DO NOT TOUCH THE VIDEO CARD!!! (and this is AT YOUR OWN RISK!!!) When the problem starts happening, shut the system off and place your finger near (but NOT ON) the video card. If the heat is too hot to bear, then there may be an overheating problem.