I'm not sure if I should post this on /g/ or here but it's a mess over there and i prefer this board desu so.

I have a new pc (less than 1 year) and it's giving me more problems than my 10yo pc all programs open abnormaly slow, downloads and uploads are slow and stop randomly, and everything shuts down randomly and the only way to turn it on again is to remove the battery from the motherboard and put it on again. Sometimes when booting on, it only boots some components and I have to tighten some connections in the motherboard in order to get everything working.

These are the specs:

Intel(R) Core(TM) i7-10700F CPU @ 2.90GHz 2.90 GHz
RAM 32,0 GB
NVIDIA GeForce RTX 3080 (10 GB)

I keep it usually clean and I'm not near the limit of storage, I just bought a new corsair PSU so that can't be it and I use two decent SSD for storage. I'm doing right now a scan with malwarebytes but I don't think that's the problem.

Any ideas to fix my idiot useless pc?