My system has been running fine for nearly a year now with no problems. Now when I start up the system it freezes at the ASUS welcome screen. If I press DEL at start up it freezes on the "Entering setup" screen. If I press TAB it freezes at the BIOS POST screen. Tried resetting CMOS a few times to no avail. Any ideas?
If you have more than 1 stick of memory, try switching them out to see if one is bad.
If you have access to another computer, download and burn iso Utlimate Boot CD disc. It has a number of diagnostic tools.