Question 32.0 GB (16.0 GB usable) on my pc

[johnnydska]

i have 32gb of memory installed on my computer but 16gb is usable shows on windows 11. I've tried msconfig, regedit, and reseated my memory. and checked the bios and shows all 32gb memory installed. are there any solution to these problems I'm having? thank you for any help or suggestions.
SPECS OF MY PC:

Processor AMD Ryzen 5 2600 Six-Core Processor 3.40 GHz
Installed RAM 32.0 GB (16.0 GB usable)
System type 64-bit operating system, x64-based processor
GIGABYTE B450 AORUS ELITE MOTHERBOARD
32 GB CORSAIR VENGENCE MEMORY 8 GB OF RAM IN EACH SLOT 4SLOTS
RTX 3060
NVME SSD PNY 256GB
i have not had this problem before . showed 32gb ram before
windows 11 pro

 

[Lutfij]

GIGABYTE B450 AORUS ELITE MOTHERBOARD
What BIOS version are you on for your motherboard?

i have not had this problem before . showed 32gb ram before
Perhaps try and clear the CMOS. You do so by disconnecting the system from the wall and display, then remove the CMOS battery, press and hold down the power button for 30secs to drain any residual power, then reseat the battery after 30mins.

 

[Misgar]

i have 32gb of memory installed on my computer but 16gb is usable shows on windows 11.

I generally put this down to a bad DIMM (if only two are fitted) or a bad memory slot.
https://superuser.com/questions/1514018/why-is-my-usable-ram-only-half-of-my-installed-ram

Pull one DIMM, boot from Memtest86 on USB. Check DIMM. If OK, remove DIMM, fit second DIMM, test second DIMM. Any faults, move DIMMs to a different mobo socket and repeat tests. That way you should be able to work out it the problem is with the DIMMs themselves or the mobo DIMM sockets.
https://www.memtest86.com/

Alternatively, try:
https://windowsreport.com/windows-11-not-using-all-ram/

 

[ex_bubblehead]

First thing to look at is RAM, as mismatched sets will cause the memory controller no end of problems. And "It used to work" simply means that you were extremely lucky.