Probably invalid Temperature Readings, spiky graph, help?

Anne_25

Prominent
May 15, 2017
5
0
510
Hi, so, one day after moving my computer between my friends house and back to me, the temperatures of my CPU started reading invalid ones and started automatically shutting my computer down whilest I was playing games.

Before this happening, I could play Arma 3 and heavier games like that with maybe 60 - 70 Degrees and the computer wouldnt shutdown, now, after this occasion, I get 60 - 70 when idle and 80+ when playing games, resulting in an automated shutdown, this is really frustrating and I can't locate the issues behind it.

Here's what EVERY CPU fan tells me:
That the Fan speed drops from 1k - 2k down to 20 or even 0 sometimes, randomly.

That the temperature changes between 40 - 80 randomly, like spikes of heat. ( PICTURE RELATED )
26654f0426735571e934263023b47d96.png


Here's a few things I've ALREADY tried:
1. Enabled Turbo mode for the CPU Fan profile in the BIOS
2. Tried SpeedFan, the fan speed would read something like 3k in speedfan, but only 500 in Speccy. And sometimes the speed would drop to 0
3. Re-added thermal paste, obviously cleaning the old one first
4. Blown any dust and / or crap out of the CPU Fan
5. Re-connected the Pwm connectors for the CPU fan to different connectors, no result

ANY HELP WILL BE GREATLY APPRECIATED