I have an ancient Toshiba Satellite 4014CDS. I little while ago I thought I'd clear the hard drive, reinstall Windows 98 and see if it would sell. It was working fine before this but now Windows won't open. All I get is the blue screen with a message saying 'This program has perform an illegal operation and will shut down'. Could anyone advise why this has happened and what I can do to rectify the situation? I'd like to get it to a state where I can pass it on to someone else either working or with the operating system removed. Thanks.