I am having quite smilliar problem, But I wont get any beeps, I tried to connect with external monitor dint worked, Tried to clean RAM and restart it dint worked, tried pressing power button for 10-15 sec without battery and AC dint worked. Finally i took my Lappy to local service center and then he told me that my graphics card is not working. He given me 3 choice 1. Reball the graphics card, which i dont understand what he is going to do in it( 2 months waranty) 2. Remove graphics card and make the motherboard with out graphics and run.(can work more than 2 months) 3. Buy new motherborad. Please help me what to do.