@TS,
try to get a 2nd opinion. According to the forum here and sa uban forums, it's an LCD issue.
So far mao ni mga common problems sa ako mga amigo sa ilang Dell XPS M1330
- Keyboard keys wont work
- Power Adapter wont work
- Defective NV GPU
Anyway, try having the LCD replaced (preferably kanang No-Fix-No-Pay nga arrangement)
if it's something with the board gyud... check if pwede pa ma replace sa Dell
NVIDIA reaches settlement in class action suit affecting Apple, Dell, HP laptops -- Engadget
My friends got tired of the other problems that plagued their laptops unya ang battery sad nila after 2-4 years kay guba na so instead of spending money pa on their old laptops... they decided to save up for new ones.
In your case, if mahal ra ang cost to fix it... you could use it as a desktop ang dock it to an external monitor and connect kb/mouse to it para naa pa syay use.