Hello once again, troubles with my pc just wouldn't end.
I switched gpu yesterday and reset cmos, because I had issues with booting.
After successful booting I have noticed that my RAM is showing 4gb, instead of 8gb, how it used to be.
Task manager says: 2 out of 4 slots used, 4gb reserved...
Alright, so basically Windows is, for whatever reason, reserving 4gb of ram which just happens to be exactly half of my usable ram and its affecting my games which is pretty much all I do so it sucks a lot.
I have two sticks of 4GB ram of DDR3 in the system (Old PC, no spare money to update it)...