Having some problems with my HP Pavillion laptop.
I've removed the battery, plugged in the power cable, and press the power button. The fans start up, and power light and the row of lights for the quick-media controls above the keyboard all come on blue. The screen lights up but stays blank black.
Pressing any of the lit-up media buttons gives a short high pitched beep. Otherwise, I can't get any activity of any sort out of it.
Holding escape during boot doesn't have any effect.
The blue light on the SD slot lights up for the first few seconds of booting then goes off. After ~10 seconds the fans spin down, harddisk goes quiet.
Any suggestions on what to try next please?