I unplugged my comptuer and took it with me for a trip. When I got there, I hooked it up and turned it on to find the message saying OS not found. After a bit of troubleshooting, I decide to take off the battery for the motherboard. Turned it back on and it worked. But my video is not the same anymore, internet certificates are missing, icons are missing on some programs. Could this have been the work of a virus?