It COULD be a loose connection between the screen and the mainboard. Worth a look, I havent dismantled that particular model but you will probably need to remove the trim above the keyboard, open the screen untill the whole machine is opened out flat and gently try to remove the trim (check for any ...
Have you tried connecting an external monitor to see if you get any display on that ? I assume from your description of the problem that there are no beeps from the machine and no display whatsoever ?
Try cleaning the cpu fan and heatsink first, a can of compressed air is usefull for this. If you still have a heat problem following the clean out then you could try a laptop cooling pad, not expensive and they can do a good job.
Hi 2e1ehm, you could try swapping the RAM or even trying your existing stick in another slot just as an experiment but the fact that you get no beeps at all on power up does not sound good, if it was a fault with GPU, RAM, CPU etc you should get a bios error code (a beep code). Check all the connect...
If you do remove the heatsink from the CPU then you should remove any old thermal compound and replace it with new before re-fitting the heatsink again.
Ok a little short on detail but are there any beeps from the machine whilst trying to boot ? Have you tried using another graphics card to eliminate GPU failure ? Is the CPU fan running ? Did you change anything prior to this issue ?
If the new memory is not recognised with the other RAM and the machine will not boot with only the new memory fitted then are you sure the 1GB stick is ok ? Do you get a beep code when booting with only the 1GB stick fitted ? Your machine will take up to 4GB but will only show 3 to 3.5GB running XP ...