Some motherboard changes can result in a computer no longer booting.
Occasionally, it is possible to make a change to the configuration of a motherboard that results in the computer no longer being able to start. This is commonly caused by a failed attempt to "overclock" the processor by running it at a higher-than-rated speed. Luckily, the complimentary metal-oxide-semiconductor that stores this configuration information can be erased even if the computer does not start. Clear the CMOS on your ASUS A7NBX-E motherboard if you have made a change in the motherboard setup utility that prevents the computer from starting.
Instructions
1. Shut your computer down and disconnect all of the cables from the back and front. Move the computer tower to a solid surface that has room for you to work.
2. Open the computer tower. Some towers have screws on the back that must be removed, while some "tool-less" models have a button or lever that releases the cover.
3. Lay the open computer tower on its side so that the motherboard can be accessed.
4. Remove the silver coin-cell battery from its socket on the motherboard. The battery is located in front of the middle white PCI expansion slot, next to a chip labeled "nVIDIA."
5. Locate a set of three metal pins labeled "CLRTC1" next to the socket from which you removed the battery. Two of the metal pins--numbered 1 and 2--are covered by a blue plastic piece called a "jumper." Move the jumper so that it covers pins 2 and 3.
6. Wait 10 seconds, then move the jumper back to pins 1 and 2.
7. Push the coin-cell battery back into its socket so that the positive side--marked with a "+" etching--faces up.
8. Close the computer tower, return it to its original location and replace all of the cables.
9. Turn the computer on and immediately begin tapping the "Delete" key until the setup utility for the ASUS A7NBX-E motherboard loads.
10. Use the motherboard setup utility to re-enter the date and time and any other custom configurations that you entered when you built your computer.
Tags: computer tower, setup utility, A7NBX-E motherboard, ASUS A7NBX-E, ASUS A7NBX-E motherboard