I scanned my computer for viruses with an Anti-Spyware program and it came up with a lot of infections, mostly adware. So instead of paying to remove them i manually went into the registry and deleted them myself since the program showed the folders they were in. But now that ive done that the keyboard and the mouse dont work. They plug into a USB port. The keyboard and mouse work when i ran diagnostics to them but dont work when i get to the login screen. Is it possible that i couldve deleted a driver possibly or something.