From SignalRGB Official Support:
Issue: “SignalRGB does not Detect my RAM”
Description: my corsair vengance rgb pro sl ddr4 ram not detected after update windows 11 from windows 10… “quit and restart as admin” is not a recomendation at all.
Some things to do:
1- I run the program as admin (from doing right click and quit, also end/kill (signalrgb core) from task manager).
2- Full power cycle?? just throw the PSU to the backyard and ate your CMOS battery… prob this will not fix the problem.
3- Reinstall the program (and delete %temp% files before install).
4- Update motherboard bios for the very last version (use official page of your motherboard).
5- Update all drivers (not windows update only), most important (in intel) is the chipset driver from Intel® Driver & Support Assistant.