I have Dell studio 1555 lap top. I came to USA for some time. We had to go out for about a week. I left lap top powered on (lid closed). After return I found that on opening the lid and pressing power button, it was not booting. Each time a pressed power button, screen flashed and went off. The battery was found fully charged.
I left it on a table and retried around 10 am. This time it started normally. It was left in the night with lid closed and power cord connected. In morning again the phenomenon repeated. It did not boot, screen flashed. Around 10-11 am it started. I have tried various combinations like shut down, sleep mode, hibernation etc every time the same phenomenon repeated. Next time I took the battery out connected power cord, power management changed to "never switch off" and kept the lid open and left over night. This time lap top was found working normal way.
I suspected that some moisture might have got in. So opened the outer cover and blew some hot air. But the phenomenon is same. In morning it does not start, screen flashes and around 10-11 am it starts.
It seems that moisture some how got in at some location and not coming out. In the night time it condenses and makes some circuit short which does not allow computer to start. By the time it is 11 am, due to higher temperature and some heating (sun light falling on it), moisture may be evaporating (still remaining in side) and again condensing in the night time.
Kindly let me know whether my assumption is right and what can be done to over come the problem