[Ham-Computers] Info on Win 98

[Brian K. Gaskamp]

I'm trying to help a friend out that messed up there desktop computer big 
time.
If you go into bios onto the system there a are options for booting the 
system up.
CD-ROM
HD
Floppy Drive

But they are not where you can choose how to boot the system up.

I'm also getting a message saying, "Invalid system disk"

I was reading about that message and looks like the system might have a 
virus and my freind said he used to have Win XP on the laptop.

Any suggestions on what to do to get the system started again, if its even 
possible.

Thanks,
Brian