Topic: Display doesn't work (not even BIOS prompt) on powering up
Hey rachad, need your help urgently.
My display wasn't working, fan used to start but there was no display. So I took the matter into my own hands and started checking the voltages of motherboard components.
The last time my laptop was on was before the power completely drained out and it switched off due to low power, not software, but hardware switch off.
I removed the CMOS to check it's voltage and it reset BIOS. Now HP Pavilion has some sort of checksum checking and the default BIOS is pretty outdated. Also, there's no BIOS update prompt from which perhaps I could update BIOS using a flash drive.
Surprisingly after I reset BIOS, the screen lit up! but it couldn't detect the OS. Not even the perfectly good bootable USB trisquel. Apparently, the last person repairing my motherboard messed something with BIOS!
Help needed man.
If possible I'd like to go to something like coreboot, if there's some bios ic replacement which can do such a thing and if I can disable hp bios checksum check.
Let us adopt systems which allow us as well as others maximum freedom.