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

Discussion in 'Hardware' started by JT Cole, Mar 4, 2004.

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  1. JT Cole

    JT Cole Thread Starter

    Aug 18, 2002
    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. brushmaster1


    Jun 15, 2002
    It's the hard drive.
  3. 700mb80min

    700mb80min Banned

    Jul 24, 2003
    Check all cables first , it is a typical error for

    A: disk in a drive

    B: loose cable

    C: hard drive
  4. ~Candy~

    ~Candy~ Retired Administrator

    Jan 27, 2001
    Access bios setup to be sure the hard drive appears there.
  5. hammerbill


    Feb 26, 2003
    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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