Anyone able to offer advise please? Have been having a few snags with the Acer laptop occasionally switching off after a long period of constant use (poss overheating?). Then today it simply refuses to boot up. The power LED on the laptop illuminates when switched on, then there is a click/whirr for a very brief second, but nothing else. Nothing on the screen. No booting up noises, and no fan sound. Nothing appears on the screen. Tried to reboot by taking battery out and using ac adaptor only, and vice versa. But nothing. Power LED on, whirr/click for a second and then silence and screen remains blank. Sounds pretty expensive to me!!!