Suddenly my win98 will go no further than than the opening screen, even in safe mode. Tried rebooting from a floppy in an attempt to reinstall 98 from the cd but wouldn't work. Step by Step Confirmation tells me that himem.sys is missing from C: but when I searched for it it is in place. I tried re-wriing it in config.sys but this didn't help. Friend says sounds like a virus. Any suggestions other than formatting and starting with a clean hard drive ?