[SOLVED] 16gb ram 7.93 usable? /// 8.1gb hardware reserved?

[PjotRR]

system:
r5 2600
1660 super
16gb ram crucial vengeance
mobo asrock b450 pro 4

 

[Colif]

Try running memtest86 on each of your ram sticks, one stick at a time, up to 4 passes. Only error count you want is 0, any higher could be cause of the problem, Remove/replace ram sticks with errors. Memtest is created as a bootable USB so that you don’t need windows to run it

Its possible one of the sticks is causing the problem

 

[SamirD]

Also, list exactly how many modules you have.