Suspecting infection, computer name change (and netbios change "9Aorka5")

Hi! firstly this is my first post so i hope i'm doing this right.

I have a win 7 computer which i suspect is infected by some kind of malware/virus

The thing is that the computer name and local network name has changed from my deafault name to "9Aorka5", unfortunately i can't find anything about this specific name on the internet, since i also have to login to user acc on computer boot while this has been automatic before.

Possible infection (if likely) when restoring mbam clean since i was unable to launch either tuneup utilities or adobe reader after cleanup, altough infection from pdf-file is also possible (but unlikely since files were scanned with avg without any warnings)

Windows defender was also unactive (noticed when computer name was already changed), upon activating defender and running full scan no threats was found either

Full scan using avg free is finished without any threats and full mbam scan in safemode without network is currently ungoing, i've never seen this kind of problem before so i need help.

Once again i'm new to the forum and have tried to supply all i've tried and figured out so far, and thank you so much in advance!

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/513044/suspecting-infection-computer-name-change-and-netbios-change-9aorka5/