Not really
The only information I could find points to:
bad hard-disk
loose IDE cable
storage not detected in BIOS,
corrupted master boot record ( MBR)
misconfigurred BIOS data about hard-disk etc.
Is there a splash screen during boot that you can dismiss and see what is happening? With any luck Win98 might tell you about mssing or corrupt DLL's that could be replaced.
Another possibility would be to restore the registry to a date when it worked.
scanreg /restore but I would be very careful with this.