Claaken :
p.s. are there any other things i should be doing to my PC as well? like are there other pieces of hardware that need maintenance etc?
About once a year I'll take my machine apart and clean everything. I don't usually take the CPU heat sink off but I do remove the motherboard to get to the case under the motherboard to blow out dust and wipe down the entire inside of the case with alcohol. While the motherboard is out I'll blow dust out of the CPU heat sink without removing it. I usually dismount the fan and clean the inside of it that faces the heat sink. Ditto the case fans.
I'll also take the cover off the PSU and clean the inside of it. That voids the warranty but I'd rather have a clean and functional PSU than a warranty anyway. Be careful with this. The inside of a PSU can be dangerous if you don't know what you are doing.
Also inspect the motherboard and PSU components for discoloration. They may not have failed yet but if they are getting hot enough to discolor they might be an issue in the near future.
Just unseating the memory and other peripheral cards and re-seating them kind of freshens the connectors with a little scraping action. Ditto the cables that connect to the back plane - you'll need to pull them loose anyway to remove the motherboard.
Since I build my own machines I'm already familiar with their construction so it only takes about an hour or so to do the whole thing. Boot it up again and immediately check your temperatures to make sure you haven't jostled anything around or forgotten to connect a fan.
This might need to be done more often if you live in a dusty or very humid environment.
) and just for internet etc. 
Facebook
Twitter
Instagram