My PC seems infected by some virus. Malwarebytes stopped opening on startup so I uninstalled it. when I install malwarebytes it gave me runtime error and it wont let me install even with MB clean tool. I managed to make it work by using windows 8 files to windows 7 malwarebytes folder. I have scanned the pc with malwarebytes and superantimalware which showed few infected item I also had Advanced System care I could no longer open that it said (Access denied). I am using Windows 7 ultimate edition. Advanced system care stopped working and comodo started giving me security agent could not be started errors. I have managed to fix advanced systemcare by taking full owenership of the program folder even though I am admin. my worry is my pc still might be infected. any help would be appreciated.