I upgradet bios for asus P5E3 motherboard and it seemed like everything was ok - windows 7 64bit loaded and was working properly. What I changed as well was setting that puts computer to sleep after 3 hours. I used to have issue that while in sleep mode I need to press restart button and windows resumes back. Well today when I switch it on all lights are on fans are on but it wouldn't even start loading bios. I tried to unplug from mains and switch it back on but it wouldn't work.