Try to install a antivirus software and search the pc for viruses. Try to access the PC from Safe Mode if you cannot install the software.
You could get a virus from infected files. Like pirate games #if_you_know_what_i_mean
If everything else fails, format is the last and only choice.
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vazeg wrote:If you change the IP he won't be able to access your computer again. He didn't hack your PC. If he did you wouldn't post this topic by now. :)
Zombie wrote:Well my PC is gaming PC since i never open anything from it just games , I've other PC for websites like Facebook and so. So this PC is empty
He has another PC for Gaming and another for Facebook/etc. so
his Gaming PC is hacked and not the one he is posting.