Solved! only fan is working after upgrading motherboard and CPU on my HP pro book 645

[kretoskim]

I had a HP pro book 645g1 then replaced it's motherboard and CPU with that of HP probook 650g1 (bcz they have same layout/design) after replacing the motherboard and insert a i7 4712mq CPU the laptop powered up and while in bios it made bip sounds and turned off..since then when i turn it on only the fan works but there is no display

 

[rgd1101]

unless you have spare parts to test with. it could be either

 

[kretoskim]

unless you have spare parts to test with. it could be either

it could be either what?

 

[rgd1101]

either cpu or the motherboard

 

[kretoskim]

either cpu or the motherboard

i think it's the motherboard since the laptop turned off and the chipset was really hot and had some smell ..thanks anyways