I've been having computer problems for a while now. my symptoms are: windows shifting over to the right of the screen, random file opening or option selecting, beeping when booting up, unable to select options, and other things like cursor sparatically moving and scrolling windows horizontally to the right, and arrow keys randomly not working. I've reformatted my computer twice, and it works for a little while, then it starts to malfunction, I've tried using my virus scanner and it says that there isn't anything on there, and I've tried using other scanners too. Now whenever I open my comp I have to do a virus scan and the malfunctions stop. But then when I boot up my computer they begin again the next time. Is this fixable? I've tried getting help before on here but I didn't get any replys, I would really appreciate some feedback, or comment of what you think is infecting my computer. Since all my scanners say I don't have any malware on my computer. So any help would be GREATLY  appreciated. Thank you.