dell n5040 (dv15 cp15 uma) black screen

alifakhrniya

Hi
laptop starts on and and sinks 0.5A current,every voltages are true,bios is ok,i did not find schematic diagram.
The LPC bus is inactive,any offer?

alifakhrniya

Hi
changed pch with other reballed one(but not new) solved problem and system boots up well but a little issue:
when system is off system turns on but black screen so when cmos cleared system starts well.
when cmos back up battery is not on board,problem not appear.
pch damaged ?

Partizanen

new PCH first place, then you can talk about something

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dell n5040 (dv15 cp15 uma) black screen

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