Computer: Compaq Presario 5000
OS: Windows 98
HD: C = original HD and D = newer HD

Problem: The computer froze so we restarted it and then a message stating that the computer could not find the operating system was put up on the screen and nothing else happened. We tried booting off a 98 boot disk and recover CD but that did not fix it. From the prompt (with boot disk) we tried to look at the HD's (dir) and first we could see the dir of C but not D and then A was the same as C and no other drives would read. Then we tried physically taking out the C drive and connecting the D drive as the C drive (we moved the jumper to master) and then a keyboard error occured on top of the OS not found.

Is it a virus? Is one of the HD going? Is the mobo going?