toshiba C855D-S5303 8GB installed only 3.59 is usable in system info ,bios & CPU-z shows 8GB

[johnevernon5]

i have a toshiba C855D-S5303 has 8GB installed but only 3.59 is uasable , msconfig doesnt fix issue

 

[USAFRet]

i have a toshiba C855D-S5303 has 8GB installed but only 3.59 is uasable , msconfig doesnt fix issue

What OS might this be?
And 32bit or 64bit? Pictures please.

 

[johnevernon5]

windows 10 64bit & it also shows 64 operating system & x64 based processor , for what its worth its a AMD Vision E-300 w/ Radeon HD Graphics 1.30Ghz

 

[rgd1101]

Are you mixing ram?

 

[johnevernon5]

no their both samsung DDR3-10600 4GB sticks & CPU-z shows under memory selection that both are dual ranks , have noticed that if i open memory tab in CPU-z that channel # and NB Frequency are gray - outed and nothing is listed ether ? Hmm