Could the following symptoms be a faulty power supply?

Question

Power Supply

There was a glitch recently. I was playing skyrim and all of a sudden the image on the screen turned blue with flashing bars (not a BSOD, it looks like a glitch of old TVs when the signal disappeared), the sound from the speakers "monotone crackle" and the computer turned off. Seconds later, he tried to turn himself on again. The coolers and screws started up and turned off again. This happened several times and I just unplugged it (turned off the uninterruptible power supply).
I thought for a moment that Khan BP had come, and then I decided to check again. Turned on the system unit and it worked as if nothing had happened. I thought maybe the static was from dust and decided to clean it all up. There was a lot of dust. Replaced the thermal paste on the video card. Two weeks have passed, it still works without such glitches.
But there is another glitch. When I play GTA4 after 5-10 minutes of playing, it throws me to the desktop without an error. The game closes stupidly. Before closing, the image freezes for a second or two. This happens in Skyrim too. Prior to the weird blue screen glitch, Skyrim used to glitch like this too, but a lot of people are complaining about the Legendary Pack version of Skyrim, so I wasn't worried. The following games do not cause this: dota2, l4d2, cs:go, crysis 2, KSP, Starbound. GTA4 was not so buggy on the same hardware a year ago.
Now 10 minutes drove LinX + FurMark. The multimeter shows on the 12V line - 12.10 in load and 12.25 in idle. There were no glitches, the temperature was normal (video - 61, processor 66).
System configuration:
- Intel Xeon 1230V2 Sandy Bridge processor,
- video card HIS Radeon 7850 2GB 860 MHz core / 1200 MHz memory
- RAM Samsung 1600 MHz 4 GB (2 pieces),
- WD Blue 500 GB hard drives (2 pieces, RAID0 on mat. controller),
- mat. AsRock H77 PRO4/MVP board, -
Chieftec CTG-450 block (promises 450 watts)
- Powercom BNT-800AP uninterruptible power supply (promises 480 watts)
and GTA4) in the power supply? If not, is it a software glitch in games or something else?
[UPDATE 12:06 02/07/2014] By the way, I just noticed. When I play GTA, there is a certain whistle from the system unit. I can't figure out exactly what it is. Looks like a video card.
[UPDATE 12:57 02/07/2013]Reduced the frequency of the video memory from the factory 1200 to 1100. It stopped crashing, I've been playing for 30 minutes. Could it be that video memory overheating is to blame?
[UPDATE 13:30 02/07/2013] Raised the core frequency from 860 to 950, and the memory from the factory 1200 to 1250. And it also works fine. I can't figure out what's wrong.
[UPDATE 00:52 02/08/2013] Installed drivers 14.02 beta. Everything is working well so far. I think they were the problem.

Answer 1

More like overheating video card.
Look at the logs.

Answer 2

Whistling or hissing can only come from a dying or overloaded PSU, since there are no coils anywhere else on the board. In your case, the graphics card requires at least 500 watts, even highlighted in red in the specs on the HIS website. Throw a hundred on the rims If the processor and memory are overclocked, multiply it by one and a half times. Judging by the model, your PSU is cheap, little known on the market. Whistling is usually associated with poor design, dust, overheating of the PSU, which leads to the drying of electrolytes, hence the ripples that begin with a wheeze. If you leave it, you can ruin the motherboard, processor, memory. Although most motherboards have secondary power supplies that protect everything that is plugged in, they keep the computer in working order until the last.