In ,
barrowhill typed:
I have an HP Compag NC6400 laptop. using last night with
no problems. Standard shutdown. This evening powered up
and nothing. No BIOS screen, no HDD activity, nothing,
just blank, black screen.
No Spare RAM to test but removed RAM and powered up to
check for POST beep. Nothing but then not sure if on this
model to expect something. HDD OK as removed and checked via USB test rig
by desktop PC. Disc readable and
contents as expected.
Am I looking at faulty RAM? or something more serious
like blown motherboard. Appreciate any input as to what
additionally to do/check for to resolve.

Or a power supply problem. Blown fuse? No output one or more rails?

HTH,

Twayne`