

Determine what BIOS version you currently have.You will need an empty USB pen drive formatted FAT 32.

This BIOS update uses the USB Flashback update method described in the Asus manual and detailed below. As mentioned above, the fix process is the same except the BIOS file. Note that this same problem can happen with other Asus X79 motherboards (P9X79, P9X79 Deluxe, X79 Deluxe, P9X79 WS or P9X79 Pro)and the procedure is pretty much the same it just uses a different BIOS file.Īsus claims that the X79 Deluxe (not P9X79 Deluxe) motherboard is Ivy Bride-E (4900 series) ready however, we found the same problem every now and then. The ProblemĪn indication that you need a BIOS update is the CPU led stays solid RED and you get no POST using the the Asus P9X79-LE with an Intel Ivy Bridge CPU. However there may be newer BIOS versions available, get the latest version when you download the BIOS file. We are using v4407 in this example along with a follow up patch kit required to clean up device manager afterward. This combo will NOT work together out of the box unless the motherboard has a BIOS revision of 4407 or higher and this multi-part fix is applied. Components used in this exampleĪsus P9X79-LE with Intel Ivy Bridge i7-4820K processor. The BIOS update must be applied FIRST or you will not get this board to post. In my case i had about 32 of them after updating my BIOS on this board. This fix gets rid of multiple “System Base Device” bangs in device manager.
P9x79 cpu led red how to#
How to Fix Asus P9X79 LE Bangs in Device Manager Overview
