check bios first .
is it detect all ur ram

download speccy and post the result here

Are you using an older computer? Older model (usually laptop) has capped for they CPU on how much RAM it can read.

is ur win10 32bit or 64bit?
32bit os have ram capped to 4GB only

taskmanager screenshot?

try msconfig > boot > advanced options >  check if maximum memory is ticked

its time to update your bios and use default bios setting.

happens to my asus rog mobo. detect 16gb but only running 8gb.

tired of checking the bios setting, just reset to default setting and walla. 16gb back.

right click the windows start icon on the bottom left
run
winver
and paste the screenshot here so that some of the experts here can check your
version

sorry but mind telling us again how do you show that only 4gb is being used?

where does it show it / how did you suspect this and from which screen?

good but how about this way

control-alt-delete
task manager
at the bottom click Open Resource Manager
then click on the memory tab
and look for this screen and the info

it shows 4096 Available?  Available available - what does Available show?

at this stage I suspect that there is a software reporting module that is not correctly
reporting you total physical ram

I now suggest that you use a ram testing program like memtest or some other ram
testing diagnostics (not the default one that you have used so far)

if I were you I would download a bootable DVD or usb that has diagnostic testing prgs
like Hirens or something similar

don't have - ask some experts here to show you where to download

virtual memory setting
try resetting to Automatic
see if that helps

so looks like you've installed the 32 bit of windows which cant use beyond 4gb

back to fresh install is your only way

problem solved

you need to see on the bios 1st. luckily asus board ha the function.

so, it display installed 16gb and usable 8gb.

otherwise, either your ram is faulty or bios problem.

sometimes, eventhough the ram is faulty, windows still can boot but show less memory.

Miracles do happen !!

Check this out bro.

https://www.reddit.com/r/techsupport/commen...me_dell_studio/

Thats how your system performance. Most app dont take so much ram. 8gb is consider enough for none video editing. U may notice when running games it would use up to 7gb ram.

I use 16gb ram.