hi guys hope some one can help my with this. i bought the laptop second hand a couple a months ago. came with vista so i flashed the bios to slic 2.1 to run win7. everthings been fine until last week when it suddenly just shut down....and thats it if i push the power button the hdd light flashs twice. you can hear the dvd drive click and the cpu fan spin and stop.then the power light stays on for 5 seconds and it shuts down???. it wont even get to the bios. tryed another hdd,ram......still the same.any advice/ ideas??