I was trying to find a solution for my problem, but without any success. Namely, I decided to move to Ubuntu system (from windows 8) and I installed latest one for my laptop (12.04 LTS).
I installed graphic card, wireless update, everything. However I'm afraid that my card is not installed property because in detail there is written 'Graphic driver: unknown' even if I installed it.
My fan is always working and I don't know how to stop it or prevent. On windows 8 everything works without problems, fan stops etc. What could be my problem?