Hello to all -first post here. Respect. After searching this forums for a couple of days i couldnt find any info on Bios mod - replacing / updating new cpu microcodes in bios. My computer: Lenovo ThinkPad L412 I have acquired a 740QM processor which is roughly same Wattage as M540 and is same socket: PGA988 So far after putting it in computer starts for about0,5 second and shuts down without making any beep or post info. So far i have 2 suspects: 1. There is no gpu on the i7 - compared to I5, and 45nm on i7 vs 32nm on i5 2. bios "Whitelist" blocks cpu / does not have a right microcode. Closest threead i found on this matter is: forums.mydigitallife.net/threads/24648-Add-CPU-support Could anybody shed a light on the matter? Which part did i get right / am wrong on. Big thanks. Cheers!.