I am installed 8gb ram but showing in task manager is 2.4gb only in hard ware reserved showing 5.6gb

[Praveendj111]

I am installed 8gb ram but showing in task manager is 2.4gb only in hard ware reserved showing 5.6gb I want to reduce uma buffer size in advanded

[BeemerBiker]

Please read this

https://www.partitionwizard.com/clone-disk/hardware-reserved-memory-windows-10.html

You may have incompatible memory.  The motherboard sees it but windows cannot use it for some reason.

An easy way to find what memory you have is to run the wmic app from the windows command prompt. Bring up the window 'cmd' prompt and enter the first line to set what memory you have. The second line may give the maximum memory possible based on the chipset. The number of memory sockets limit what can be added.

wmic memorychip get devicelocator, capacity, speed, MemoryType, formfactor, partnumber, manufacturer

wmic memphysical get maxcapacityEx

for example

Please post the results along with the  Product ID or Model name for better assistance.