Are you using some software for testing RAM on Win11?

I want to test the RAM modules on my PC. What software do you use for that?

The same as in previous windows versions. Use Google

try this, Memtest , it might help

yes,You might want to try MemTest to test your memory from within Windows. The free version lets you run multiple copies to cover all your RAM, or you can buy the paid version to test everything at once. Another option is Memtest86+, which tests your memory outside of Windows for more accurate results.

Windows has a built-in memtest.

You already have a built-in tool called Windows Memory Diagnostic. It’s pretty straightforward to use!