Bought a used HP Pavilion ZE5525ea with a bad flashed BIOS. Tried using the bootblock mode with partially success. On first try the floppy was read but nothing happend. Got a new floppy that my floppy drive did not like just came with those horrible noises only a floppy drive can make.
I turned it off again. Tried to turn it on, but then all lights went on and the dvd-rom made the initialising sound(or what to call it) for evere 2 sec.
Okey I tought. I ripped out the chip(destroying it), soldered in a PLCC-socket. Found a 29F040 chip (the original was a SST39SF040), programmed this. But there is nothing more happening when I turn on the laptop. All lights stays on and the dvd-drive is "initialising" every 2sec.
There is no change if there is a cd in the drive, even if I remove all RAM there's no change...
Could this be because I used another chip? (same voltage, same pinout)
Charging is working.. (but only when chip is in place)
Or, what do do now?