Hi, A strange CPU behavior has appeared yesterday. No matter, what I do, it rapidly heats up, and cools down.
In idle it's 30c and stable. E.g I lauch browser - temp goes up to 50 or even more. (monitoring in aida64 and mobo onboard display), after the browser has loaded (1-2sec) the CPU goes back to 30c very fast. CPU fan rpm goes up and down, while the CPU temp jumps.
I click any link, open any document/programm (heavier than notepad or paint) and cpu temp jumps 30-55 and back. In BIOS the fan is set to quiete mode.
CPU cooler attached well. (I think the temp wouldn't be 30 in idle if the cooler was loose).