I've a UK Sony Vaio VGN-NW20EF that won't start up.
Power block & power cable are working OK.
I have removed RAM, HD & CD/DVD drive to eliminate those.
1) With power disconnected, I have removed battery & hold power button down for 10 seconds (to reset PMU ?)
2) When I then connect battery & power the orange battery light on the front comes on & remains on .... until ...
3) When I then try to power on the laptop the green mains power light at the front also comes on for one second then goes out, as does the orange battery light and it will remain dead until I go back to step 1.
Any ideas most gratefully received ! Thanks.