I recently built a new PC and managed to get my DisplayPort to work for a while. However, while trying to play Valorant, I encountered a message about needing TFM 2.0. I went into the BIOS of my ASUS motherboard to enable it, and despite it being enabled already, I switched to Windows UEFI mode which initially resolved the issue. Unfortunately, after restarting my PC due to a freeze, I'm now getting a 'Display Port No Signal' message. I remember having the option to press Y to revert or N to continue during the boot process after switching to UEFI, which might be relevant.
2 Answers
Does your PC actually boot up at all? If so, what happens after that? Just a heads up, if the fans are running and nothing displays, it’s likely saying 'Display Port Not Found'. Using an ASUS monitor can help with compatibility, but might not be the main issue here. Tell me more about the booting process!
There might be a problem with how Windows was installed after switching to UEFI. Typically, once you install Windows, you can't just switch to UEFI without repartitioning your drive. If you want UEFI and secure boot, you might need to do a fresh install of Windows. And if you're facing no POST issues, have you tried performing a CMOS reset?

Related Questions
Lenovo Thinkpad Stuck In Update Loop Install FilterDriverU2_Reload