I have had this same problem with my nc6000 for about 3 months now. It boots when you press on the right hand side of the laptop, below the keyboard where the Pentium and WinXP stickers are. Whenever it did boot it would hang randomly after about 10 or 15 mins use. Weirdly if I booted into Safe Mode it would not hang - even after hours of being turned on - so I thought it must be software related and formatted my machine. *DON'T DO THIS* It won't work. The solution that worked for me is below.
On the good advice of another user (Dhakir) on the forum below:
http://www.techimo.com/forum/showthread.php?t=126058&page=8
- Remove the keyboard
- Remove the LED board (unscrew 2 black screws on the back of the laptop)
- Remove the memory and keyboard plates
- Push down hard the lower left corner of the fan assembly (the thick metal around the fan)
- Try booting it on while pushing this part down
- I then unscrewed the screw at the top left of the fan casing and then screwed it down tight.
Laptop has booted successfully now 30 times in a row without an issue.
In the middle of re-installing XP as I write this.
Hope this works for some of you out there.