I have compaq f739 laptop, some days before it was having problem with display, it was working but there was no display at all. I opened it checked graphics chip and put a paste and gave it hot air( all material euipments i gathered from a mobile shop) and then display started to come. But since then there is no sound, no wireless card detection, no dvd drive detection.
What could be the cause.
What could be the cause.
