My inspiron 8100 was working until recently I booted it up and the screen was completely blank, there was no sound of activity coming from the computer, and both the power light and the HDD activity lights were steadily green and did not change. The weird part is when I leave the computer sitting on my table for about 16 hours, when I turn it on, it works perfectly. Then when it either shuts down or restarts, the same thing happens. I have to wait another 16 hours for everything to work. This happens when the AC adapter is plugged into the laptop(which feeds power to the laptop if the battery is absent) and also when only the battery is in. I have tried disabling everything possible in BIOS and reinstalling Windows XP but nothing helps... What is the problem?