Recently I tried to clean my PC with an I5 11400F CPU. I removed the GPU and wanted to remove the CPU cooler too but couldn’t do it. I tried though and I think I might have damaged the motherboard with a screwdriver in a few places during the process (don’t ask how). Can it be the reason for the spikes? Like could I damage some sensors and now they sometimes fail and show 0°C (which is what 100°C to TjMAX means)? There are no other visible issues with the PC though so I guess it can be a just a bug. Btw I can’t add screenshots because of some weird Jerboa bug
You sound like you’d be able to figure it out, I’m sure if you look up your cooler on the web you’ll find video and instructions. If you have cooling paste available I’d say go for it.