Frederick,

Thanks for input. Tried your tip but no joy.

I've reset (unplugged battery) CMOS but also no joy.



"Frederick" wrote in message
...
On Mon, 15 Aug 2011 22:23:31 +0100, "barrowhill"
wrote:

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.


I'll tell you what worked for me - know not why yet.

Unplug AC adapter.
Unplug all other cables.
Remove BATTERY.
Try to power up using AC adapter again.
Mine powered up.
Shut down,
Remove adapter/
Replace BATTERY.
Power up from the BATTERY.
Mine worked.
Still does a day later,

Big Fred