I currently have a Gigabyte Ga-990fxa-ud5 R5 with 32gb of ram installed.  The other day I upgraded to a 500gb ssd.  Then the problem started.  Windows 10 x64 system window started showing 32gb/16gb usable.  So I downgraded back to 8.1 x64.  downloaded Rammap from Microsoft, and ran it.  It showed that I have 16gb driver locked on the motherboard.  Before I upgraded all 32gb's were usable.  I wasn't running any vm's what so ever.  I have researched the problem for over a day, now.  And all the searches came up with driver locked memory with vn's installed, which was no help what so ever.  I have posted on several other computer forums, and have a support ticket with gigabyte. about the problem.  Does anyone know how to unock driver locked ram?  if so can you give me a step by step guide to fix the problem?

 

 

Alucke

Is this correct? (please fill in the original HDD specs):

System constants

MB: Gigabyte Ga-990fxa-ud5 R5

Ram: 32gb of ram installed.

Originally

OS: Windows 8.1 x64

HDD: ???

all 32gb's were usable.

First upgrade

OS: Windows 10 x64

HDD: ???

all 32gb's were usable.

Second upgrade

OS: Windows 10 x64

SSD: 500gb ssd.

32gb/16gb usable.

Downgrade

OS: Windows 8.1 x64

SSD: 500gb ssd.

32gb/16gb usable.

16gb driver locked on the motherboard.

Please provide more details about both the SSD and the driver that is locking 16GB.