Asus bios no CSM option please help

Hi,

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Don’t know the PC but if you have:

Legacy BIOS go to Save and Exit > Restore defaults > Yes. Then go to Boot > Boot Option #1 and make sure that the HDD is selected. Then go back to Save and Exit > Save Changes and Exit > Yes.

You will need to use the arrow keys on the keyboard to navigate through the menus and the Enter key to select the option

I think that it is the same for UEFI BIOS except that you should be able to use a mouse to navigate.

Hi,

Try a power refresh and check if that resolves the problem.

Turn off the PC and disconnect the power cord from the PSU.

Press and hold the PC’s power On button for a full 30 seconds and then release it to hopefully restore the BIOS.

Reconnect the power to the PC and then see what happens.

If still no good then you may have to turn off the PC and disconnect the power cord from the PSU and also open the desktop and disconnect the cmos battery from the motherboard and then press the Power on button for a full 30 seconds. Then replace the cmos battery, reassemble the desktop, reconnect the power and then turn on and check etc.

Here’s a video that may help with opening the desktop as this video which shows the cmos battery isn’t that good at showing this.

Here’s a composite image taken from the 2nd video showing the location of the cmos battery and where it is plugged into the motherboard.

(click on image to enlarge for better viewing)

If still no good then you may have to contact Asus as I don’t know how to reflash the BIOS if it is corrupted that much