How To Fix 5 short beeps when Disabling CSM in BIOS

[JasonUT]

I wanted to document this in case others experience a similar issue.

Problem: When disabling CSM, via BIOS, the PC won't boot and gives 5 short beep error code.

Solution: Updated nVidia Displayport Firmware via the following link:
NVIDIA GRAPHICS FIRMWARE UPDATE TOOL FOR DISPLAYPORT 1.3 AND 1.4 DISPLAYS

Background:
I built a new PC in preparation for Windows 11 and associated hardware requirements. I installed Windows 10 OS with GPT/UEFI/TPM2.0, but was unable to turn ON Secure Boot, because I wasn't able to successfully disable CSM in the BIOS. When I tried to disable CSM and restart, I would receive 5 short beeps indicating processor error. Thus, I first suspected CPU, then GPU, tried to remove and reseat the components, but no luck. Each time I would reset the CMOS, via jumper, to enable CSM default ON setting. Rinse and repeat for 3 days of troubleshooting and researching and reading. In hindsight, it's possible I could have switched to HDMI cable as a work around. It's possible others don't see this issue, because they are or were using a HDMI or DVI cable previously.

I eventually discovered the solution for my situation buried in this reddit thread.
X570 Aorus Pro rev1.2 - Disabling CSM causes PC stuck on GPU Led. : gigabyte (reddit.com)

My system specs:
AMD Ryzen 5 5600x
ASRock B550M PRO4
Western Digital WD BLACK SN850 NVMe M.2 2280 1TB
G.SKILL Ripjaws V Series 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3600
EVGA SuperNOVA 650 GS 220-GS-0650-V1 (From Previous build)
MSI GeForce GTX 970 GAMING 4G LE (From Previous build)

 

[Koekieezz]

I wanted to document this in case others experience a similar issue.

Problem: When disabling CSM, via BIOS, the PC won't boot and gives 5 short beep error code.

Solution: Updated nVidia Displayport Firmware via the following link:
NVIDIA GRAPHICS FIRMWARE UPDATE TOOL FOR DISPLAYPORT 1.3 AND 1.4 DISPLAYS

Background:
I built a new PC in preparation for Windows 11 and associated hardware requirements. I installed Windows 10 OS with GPT/UEFI/TPM2.0, but was unable to turn ON Secure Boot, because I wasn't able to successfully disable CSM in the BIOS. When I tried to disable CSM and restart, I would receive 5 short beeps indicating processor error. Thus, I first suspected CPU, then GPU, tried to remove and reseat the components, but no luck. Each time I would reset the CMOS, via jumper, to enable CSM default ON setting. Rinse and repeat for 3 days of troubleshooting and researching and reading. In hindsight, it's possible I could have switched to HDMI cable as a work around. It's possible others don't see this issue, because they are or were using a HDMI or DVI cable previously.

I eventually discovered the solution for my situation buried in this reddit thread.
X570 Aorus Pro rev1.2 - Disabling CSM causes PC stuck on GPU Led. : gigabyte (reddit.com)

My system specs:
AMD Ryzen 5 5600x
ASRock B550M PRO4
Western Digital WD BLACK SN850 NVMe M.2 2280 1TB
G.SKILL Ripjaws V Series 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3600
EVGA SuperNOVA 650 GS 220-GS-0650-V1 (From Previous build)
MSI GeForce GTX 970 GAMING 4G LE (From Previous build)

Nice solution on the How-To

 

[rodjar13]

I wanted to document this in case others experience a similar issue.

Problem: When disabling CSM, via BIOS, the PC won't boot and gives 5 short beep error code.

Solution: Updated nVidia Displayport Firmware via the following link:
NVIDIA GRAPHICS FIRMWARE UPDATE TOOL FOR DISPLAYPORT 1.3 AND 1.4 DISPLAYS

Background:
I built a new PC in preparation for Windows 11 and associated hardware requirements. I installed Windows 10 OS with GPT/UEFI/TPM2.0, but was unable to turn ON Secure Boot, because I wasn't able to successfully disable CSM in the BIOS. When I tried to disable CSM and restart, I would receive 5 short beeps indicating processor error. Thus, I first suspected CPU, then GPU, tried to remove and reseat the components, but no luck. Each time I would reset the CMOS, via jumper, to enable CSM default ON setting. Rinse and repeat for 3 days of troubleshooting and researching and reading. In hindsight, it's possible I could have switched to HDMI cable as a work around. It's possible others don't see this issue, because they are or were using a HDMI or DVI cable previously.

I eventually discovered the solution for my situation buried in this reddit thread.
X570 Aorus Pro rev1.2 - Disabling CSM causes PC stuck on GPU Led. : gigabyte (reddit.com)

My system specs:
AMD Ryzen 5 5600x
ASRock B550M PRO4
Western Digital WD BLACK SN850 NVMe M.2 2280 1TB
G.SKILL Ripjaws V Series 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3600
EVGA SuperNOVA 650 GS 220-GS-0650-V1 (From Previous build)
MSI GeForce GTX 970 GAMING 4G LE (From Previous build)

I just wanted to thank you for documenting this issue and your solution. I have a PC with the same CPU and GPU, only significant difference is I am using a X570 Gigabyte Aorus board which appears to have a fail safe built in- the bios was preventing me from disabling CSM mode even though I had changed my SSD partition format to GPT. Every time I would re-boot after attempting to disable CSM, the bios menu showed it had automatically been enabled again (rather than failing to booth and getting 5 short beeps). Updating the DP firmware on the graphics card allowed me to permanently disable CSM and then enable secure boot ready for Windows 11.