We have a Toshiba P200 laptop, which is not responding to anything. Earlier we tried installing an old printer, but that didn’t work. So we bought a new one and that seemed to work OK. Just after that the computer started doing a Norton antivirus scan. We tried to cancel that but it just hung there doing nothing. We went onto help files but they also hung there doing nothing. Basically the computer just refused to do anything, even shut down. Task Manager would not function; we only got an error message. All we get is a dark, blank screen. We have been unable to shut it down. The arrow curser is there and moves around, but there’s nothing to click on. Please help!