Don't ask how to hack password. (BIOS Passwords)
#60380 by alvin
Sat Mar 01, 2014 9:22 pm
I'm upgrading an old Lenovo 3000 N500 4233-52U laptop with a Intel Celeron 575 CPU to a Intel P8400 CPU which is stated in the Lenovo Hardware manual as one of the available processors for this computer which there are 13 CPU options.

I purchased a used one which was stated, "tested working" and installed it. The laptop runs but doesn't POST or at least the video is not working. It does try to access the boot order as I here the DVD drive work and see the harddrive light come on. There are no beeps. I updated the BIOS with the only additional BIOS supplied for this model with no visible difference. Here is the BIOS page for this laptop

While researching this problem, I've noticed others were not able to use this CPU either, but I see where different people claim to be able to use CPU's not on the list of CPU's supplied with this laptop. I'm thinking there may be a BIOS problem or maybe an issue with the interface with the GPU which I'm hoping to mod the BIOS to fix the configuration if possible. Is this possible or am I reaching?