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"Invalid system disk" error w/no disk in drive

965 views 4 replies 5 participants last post by  hammerbill 
#1 ·
A friend has an old Pentium 1 HP Vectra 500 PC. On startup it says "Invalid system disk" like if you had a disk in the floppy drive. There is no disk in the CD or A drive. I took the A drive and CD out of the boot sequence via the bios and it made no difference. Is it the hard drive?
 
#2 ·
It's the hard drive.
 
#5 ·
If the drives show up in CMOS, (or if you don't want to check) put in an emergency startup disc and run "FDISK". Choose "dispay partition info". Do you see a partition? Is it listed as active? Exit without making any changes. If there is an active partition, keep your startup disc in the floppy drive and run "scanreg /restore" to resore the registry. This may fix the problem. If no partitions appear you may be able to salvage them using a partition program. Information retreival services are expensive last resorts. When things get this bad, its often due to a virus.
 
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