hi every one
i have E5510.... i just replace cpu with greater one but not work and trun off after 3 second .... after 2 week i lose the itself cpu and i when i plug another cpu (intel i5 480m )in socket laptop not trun on and off after 3 second (amper about 0.10) BUT when i turn laptop without cpu laptop will turn on good and all voltages come such as
vtt0.75 -1.05v pch -1.5v ddr -3.3v sus -...... and all voltages good i thinks the board is ok but what the problem ?/?? note when i check PLATRST on (without cpu) no signal found ...
i change cpu core ic and BGA hm55 chip but not help

note when i plug cpu i have short on VTT voltage on PL5201 and L2702
help me please