Artifacts after replacing RAM and CPU?

Question

Iron

Good day, comrades.
This problem has arisen for a long time, but it has become more frequent lately.
It all started with the fact that I decided to "upgrade" my Toshiba C660 laptop in a democratic way, with the help of kindred China.
After a lot of comparisons of price/quality and delivery, in a very famous Chinese store, I ordered 4x2 Kingston RAM (in reality, Binful arrived with Elpida chips) and a Core i7-2640m processor (4 cores). Everything came up, installed, worked ... but after 5 minutes of watching 1080p on YouTube, I saw this:

Click me!

Considering that the sound came through good headphones, after what you saw, you could safely no longer sleep at night, since the effect is no worse than the "Call".
In general, the screen abruptly began to flicker strongly, sharp stripes, glare appeared, it was impossible to look at this. The sound was like 1000 fingernails scratching on glass, it sounded very impressive.
But something I digress from the essence. After that, the computer did not react to anything, I had to reset it through the "reset". After the reboot, everything repeated, but there was a high temperature of the processor. I dismantled everything again, applied instead of the complete paste (it was very liquid, everything evaporated in a day), a new one, terribly viscous like plasticine, which many advised. Temperature indicators improved, but this did not help.
Then I got the idea to take and ... pull out one bar of RAM, so what if 4 instead of 8, but it works :)
Miraculously, the stability of the system increased, everything worked fine, but sometimes, when watching 1080p movies for more than 2 hours or watching a long dynamic video, this frieze still appeared.
What I did:
RAM test 35 minutes with Memtest86+ = no errors.
Checking the processor with Prime95 in the second mode = freeze after 5 minutes.
Checking the processor with Prime95 in the third mode = freeze after 15 minutes.
Checking the SSD (just in case, since I changed it along with the RAM and the processor) = excellent condition.
Checking the second HDD = good condition.
Checking the temperature using OpenHardwareMonitor = before the freeze, TurboBoost of the processor turned on and a sharp increase in W, maybe something else jumped up.

Answer 1

Disable turbo boost, in the power settings, reduce the maximum state of the processor (well, put somewhere 70). Buy the support is cooling.
Such and such an upgrade of a laptop, in which CO is always back to back, and with the slightest problems, it does not cope at all.
Well, and also this "enlisting help from kindred China." Artifacts then appear due to the intel graphics core, since this is a laptop. If the discrete is always on, it is heated by the processor, since the CO is most likely combined.

Answer 2

This is RAM, I already had a bunch of such cases, check with the goldmemory utility. There is such a boot assembly Strelec, it has such a utility in DOS mode. Download from any torrent and make a bootable flash drive. Make sure that the problem is with the RAM and throw it away