Now I can´t command anymore, and I am afraid that if I turn off my computer I might brick the motherboard (ive heard of alot of stories maybe…) No operating system installed yet. Several files seemed to be missing. sorry for sort of giving you this task I should have known better not to get into by myself
Linux (even the installer) can be a bit more picky about memory/system stability issues than Windows is; if this is a new system then set everything back to default clocks first (if you have overclocked anything) and see if the issue goes away.