Question How do I recover after changing memory clock settings in bios, no bios splash screen or windows? No video output.

[Sgonzalez90]

How do I recover after changing memory clock settings in bios, no bios splash screen or windows?

I recently got a Ryzen 7950x3d and have had a number of issues….I was seeing if the memory profile settings were it, so I updated the DDR5 buss speed from auto to DDR5 6000MHz, and also the expo profile to tweaked. After restarting, the BIOS splash screen and windows do not load. The screen remains black. How can I further troubleshoot this?

2nd issue when I was loading into windows I was often getting blue screens if death for various issues which I thought maybe timing related. I also haven’t updated to the latest bios yet because I haven’t gotten there yet. The MOBO I have is the ASUS RoG Strix B650-A.

Please let this is a bit painful :/

 

[turtletarget111]

Simply reset the CMOS of your motherboard. Your motherboard may have a dedicated BIOS Flashback button, which, when pressed, will reset everything to default settings. The button will be labeled, "BIOS Flashback" or "Clear CMOS". This button may be on the back of the board with the IO, or it may be on the front of the board, usually in one of the corners. If you do not have such a feature, remove the CMOS battery from the motherboard. You may need to remove your video card to gain access. I like to use a screwdriver to press the pin, which will pop the battery out of the socket. If you are using a screwdriver or something metal, be extremely careful to not scrape the motherboard, as this could damage the traces. Once you have it removed, hold the power button on your computer for a full minute to drain the capacitors, and then wait another five minutes before reseating the battery. The BIOS should boot up with default settings. Hope this helped, take care.

 

[Misgar]

I strongly recommend updating the BIOS ASAP.

With an X3D CPU it's vital you install the latest BIOS featuring the new 1.30V limit, otherwise your CPU coukl overheat and destroy the motherboard socket. The latest AGESA code also improves high speed memory stability.

https://www.tomshardware.com/news/amd-ryzen-7000x3d-burnout-reports

If you cannot get XMP 6000MT/s to work, try manually relaxing the CL (CAS) timing by a couple of clock cycles, e.g. if your RAM is CL30 at 6000MT/s, try CL32.