I recently installed a 32GB kit made up of two 16GB Corsair Vengeance LPX DDR4 modules rated for 3200 MT/s. My system uses a Gigabyte B550 Aorus Elite AX V2 Rev. 1.5 motherboard and a Ryzen 7 5700X3D. The BIOS is fully updated, but enabling XMP causes the computer to remain on a black screen and never reach the BIOS or operating system. Clearing the CMOS with the jumper or by removing the battery does not seem to recover it. So far, the only reliable way I have found to restore the system is to reflash the BIOS with Q-Flash and reseat the memory. Has anyone dealt with this, and is there a safe way to run the RAM at its rated speed?
2 Answers
Start with one memory stick in the recommended slot, confirm the system can boot at default settings, and then test the second stick separately. If both work individually, try the pair with XMP disabled before changing anything else. Also make sure the modules are installed in the motherboard’s preferred dual-channel slots. If 3200 still fails, the kit may not be stable with this particular CPU and board combination, even if it is rated for that speed.
Since the system is stable at default settings, try entering the frequency and voltage manually instead of enabling the complete XMP profile. A lower memory speed such as 2933 or 3000 MT/s may be necessary, and you should use the voltage printed on the memory label. Avoid repeatedly forcing failed boots; fully power down, disconnect the power supply, and use the board’s proper clear-CMOS procedure before trying another setting.
I eventually recovered the system with Q-Flash and reseated the RAM. Manually setting the timings and voltage while dropping the speed to 2933 MT/s seems stable for now, although the XMP profile still refuses to boot.