System is a three year old HP Pavilion zv5120us with XP Home SP2. The problem initially started as a recurring BSOD with stop error 0x000000f4. KERNEL_DATA_INPAGE_ERROR was displayed one time with this stop error. After the initial BSOD, restarting Windows normally took from five to ten minutes. Subsequent BSODs happened within minutes of eaach restart. I was able to boot into safe mode without apparent problems. The next day, even safe mode fell victim to the BSOD.
I reseated the RAM only to find that the problem had worsened. The system will not boot to Windows now. Upon restart, the HP logo appears and I am able to boot into the BIOS, but that is all. If I let the computer boot past that, I am faced with a black screen. The HDD light comes on for a moment, and then not at all. Other lights (touchpad, caps lock, num lock, etc) all illuminate and can be turned on and off with their respective keys.
I've run HP's HDD diagnostic test in the BIOS with no indicated errors. Also, I have tried booting from a recovery cd with no luck.
The only item I have removed for troubleshooting thus far is the RAM. With it removed, the problem does not change.
Any insight would be greatly appreciated.