fujitsu-seimens p7120 display problem

[hairymonster]

Hi, I've got a fujitsu-seimens p7120 that has had a bit of a shock, it flew out the van window whilst going round a corner

It's still working (in a fashion) but the display keeps changing colour and goes funny when you lift it when it's turned on but works fine connected to a monitor.

I've stripped it down totally and plugged everything back up again just in case a connection had come loose but it's still the same.

Anybody any ideas please. Ta.