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Hi, I just built my first custom PC last week and it has been working perfectly for a week. However, yesterday I tried to enable secure boot and had to disable CSM in the process. after I saved and exited the bios, the display went straight to no signal. I have already tried troubleshooting some things such as: Clearing CMOS by shorting the CLR CMOS jumper as well as removing the CMOS battery for about 5 minutes. I also tried resetting the gpu and ram, as well as using a display port cable instead of the HDMI one I normally used. When I turn my PC on it turns on all my fans and RGB components including ram, but my monitor says no signal (the cable is plugged into the GPU) The motherboard doesn’t have any diagnostic LEDs that light up and the gpu fans start and stop spinning repeatedly (I assume the gpu does this to test the fans when booting but not sure) My pc specs are: Motherboard - Gigabyte B550 aorus elite ax v2 Gpu- powercolour fighter AMD rx 6700 xt Ram - Corsair RGB vengeance pro sl (16gb 3200mhz) Case - Lian li lancool 2 mesh CPU - AMD Ryzen 5600x AIO - Lian li gallahad 240 PSU - Gigabyte 650w Any help would be appreciated.
Secure Boot Enabling with Existing Windows 10 Installation If Windows was installed in UEFI mode (if your OS disk uses GPT rather than MBR then it is already in UEFI mode), then you can just enable Secure Boot in the UEFI/BIOS. Now Master Boot Record (MBR) disks use the standard BIOS partition table. GUID Partition Table (GPT) disks use Unified Extensible Firmware Interface (UEFI). But in your case your system drive was probably set up with MBR. You will need to switch it to GPT. Microsoft has a conversion utility called MBR2GPT that converts the disk to GPT and creates the necessary additional partitions. You can run it from a Windows PE flash drive. The link below explains in more detail. Once done the Secure Boot on and CSM off settings in the UEFI/BIOS should now work. https://learn.microsoft.com/en-us/window…
Hi, Seems as though the PC is not passing POST. (Power On Self Test) Try connecting a system speaker (supplier example only) to the motherboard header pins and check what the beep error code is. (see image below) Here’s the manual for the motherboard. The system speaker connects to the F_PANEL (Front Panel Header) see p.18 for where to connect the speaker and p.13 (#11) for where it is located on the motherboard.
(click on image)
If the monitor went blank when you enabled Secure Boot and disabled CSM, then Secure Boot may have disabled your monitor or graphics drivers. Chances are, Secure Boot doesn’t recognized the drivers as digitally signed. Your options may be to: Disable Secure Boot again.Reinstall the OS under the current configuration (with Secure Boot enabled).
