PC continues to power on using CSM even after switching the drive from MSR to GPT.
PC continues to power on using CSM even after switching the drive from MSR to GPT.
Hey! I recently switched my drive from MSR to GPT, possibly without much thought. After rebooting and getting no display, I managed to reset the BIOS and eventually got Windows to boot. However, when I restart the PC again, the issue returns with no display. I found a solution by turning off the PC, disconnecting the PSU, unplugging it, and then plugging it back in before starting up. After doing this, I accessed my BIOS and noticed that CSM was still enabled. I looked into tutorials on YouTube about enabling secure boot and UEFI for my motherboard, but ended up with no display once more. I reset the BIOS again, which allowed the PC to boot, though it remained in CSM mode. I checked if my motherboard supported UEFI beforehand, including my graphics card and processor, and everything seemed fine. After all this, I found a forum thread that might match my problem: https://forums. My system specs are: Gigabyte B450M S2H motherboard AMD Ryzen 3 3100 CPU Gigabyte AMD Radeon 5600XT 6GB 2x8GB 3200MHz RAM Regarding the PSU, I’m not sure if it’s required, but I’m confident I can locate it later. Thanks for any assistance!
Welcome to the forums, newcomer!
You have pending BIOS updates. If I were you, I’d ensure my motherboard drivers were up-to-date, then update the BIOS to the latest version and try the GPT conversion.
Another step would’ve been backing up all mission-critical data from the relevant drive and preparing for a clean install with UEFI, Secure Boot, and Fast Boot enabled (except X.M.P.).
Consider sharing a screenshot of what you’re seeing in Disk Management.
Also, don’t forget to mention the PSU’s make, model, and age.
Thank you for the welcome!
I verified whether this BIOS version supports UEFI before installation, and it confirmed it does. That’s why I didn’t update, but I should have anyway.
I’ll look up my PSU make and model soon, as you suggested. In the meantime, here are the disk management images; if you need anything else, just let me know.
Here are the disk management pictures:
https://imgur.com/a/GYhvLGk
Display an image from BIOS - Boot priority options.
Your machine is running in UEFI mode, and the drive is correctly converted to GPT already.
Everything appears normal there.
I think the issue might be with the boot priority configuration.
It seems the system first attempts legacy mode, and only switches to UEFI if it fails to boot there.
This could be the issue—there are two boot drives connected to the same device. Should I attempt to prioritize boot option 2?
if there is no display when CSM is turned off, it suggests a problem with the GPU firmware running on your BIOS (UEFI or VBIO). Updating the BIOS or VBIO could resolve this issue. In the meantime, to ensure a working display and boot in UEFI mode, keep CSM enabled and switch the storage boot control from legacy to UEFI, which is located just below the CSM settings. This will maintain the GPU in legacy mode, allowing you to see during reboots and have Windows boot in UEFI. Unless you require secure boot for certain games, this appears to be the most viable solution without needing to update the mainboard or GPU firmware.
it's also possible the GPU isn't detecting your monitor properly. In legacy mode, the GPU sends data to the monitor even when none is connected. However, under UEFI, the GPU communicates with the monitor, and connection problems might prevent timely output reception, leading Windows to assume the monitor isn't connected. The image will then activate in Windows because it already has your monitor information stored and checks for presence pins. Try using a different video port or cable and ensure it's fully inserted without any obstruction from the PC case.