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HP AP5000 All In 1 POS System Freezes At Windows 7 "Starting Windows" Screen. Logo Doesn't Show.

HP AP5000
Microsoft Windows 7 (64-bit)

HP AP5000 All In 1 POS System Freezes At Windows 7 "Starting Windows" Screen. Logo Doesn't Even Show.

Bios works and I can reach the F8 Windows Boot Options. All options freeze at the "Starting Windows" Screen.

The screen freezes and goes blank if I try to choose "Launch Start Up Repair".

Safe mode freezes once it reaches "CLASSPNP.SYS".

Ive enabled and disabled all bios settings.

Ive tried several dual core CPUs and a Celeron 400 CPU.

Ive tried different DDR2 RAM. Ive tested the RAM using both short and extended tests and it passed.

Ive tried 2 hard drives and they work in other computers fine.

No Bluescreen message appears.

Used a USB to load HP vision diagnostics, the ram test it passes.

Tried both 32 Bit and 64 Bit Windows 7 Versions.

The Fan revs gradually higher when frozen on the WIndows Startup screen.

Tried with and without Keyboard, Mouse, MSR and VFD Screen connected.

Any help would be greatly appreciated.

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HP Recommended

HP AP5000 All In 1 POS System Freezes At Windows 7 "Starting Windows" Screen. Logo Doesn't Show.

You've tried many things.  More to try:

 

1. different SATA cables to CD/DVD and disk-drive;

2. different CD/DVD drive -- in case the drive has an "intermittent" problem;

3. if you have an identical computer, "clone" that (working) disk-drive, and try to boot from the clone;

4. different power-supply;

5. download the free(!) UBUNTU variant of Linux, and burn to a DVD.  Boot from it, and select the "Live CD" version.

This option will not "touch" your disk-drive, but will give your motherboard a "workout" while loading UBUNTU.

If it does not load, my guess is a motherboard problem.

 

 

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