RAM

[mrvasset]

A friend of me got a pc with 8 gigs of ram installed windows(8.1) is detecting all 8GB but I can only yous 3,94GB. Got some ideas what can be the problem? 
No OC 

Thanks for answers

[-TesseracT-]

Maybe he's running the 32-bit version of Windows, where only 4GB are usable.

[Muffinmaddness]

could be a compatibility issue with the ram or he's using the 32bit vers of windows. 

[Josh55]

Typical "oh crap I accidentally installed the 32 bit version instead of the 64 bit version"

happens to everyone

[mrvasset]

The operating system is 64 bit

[mopman94]

32bit version of windows instead of 64.

Failing that one is not plugged in properly

[mopman94]

The operating system is 64 bit

Make sure both sticks of RAM are properly plugged in.

[mrvasset]

Make sure both sticks of RAM are properly plugged in.

I tried all the different ram slots and non of changed anny thing

[mopman94]

I tried all the different ram slots and non of changed anny thing

Try each of them on their own and boot up the PC, if it won't boot that RAM stick is broken.

[William12h]

I tried all the different ram slots and non of changed anny thing

Make sure the RAM are inserted correctly and they click in or that the gate things are shit propperly

RAM should be inserted like

DIMM 1  --RAM 

DIMM 2

DIMM 1  --RAM

DIMM 2

 

Also check in Bios if it is showing 8Gbs of RAM, of its showing 4GB then 1 RAM is not working or inserted correctly. Or you actually do have a 32 bit OS

[BuntzenB]

Make sure the RAM are inserted correctly and they click in or that the gate things are shit propperly

RAM should be inserted like

DIMM 1  --RAM 

DIMM 2

DIMM 1  --RAM

DIMM 2

 

Also check in Bios if it is showing 8Gbs of RAM, of its showing 4GB then 1 RAM is not working or inserted correctly. Or you actually do have a 32 bit OS

 

not necessarily. actually in my board its 2 and 4.

[BuntzenB]

run memtest http://www.memtest86.com/

[Briggsy]

A friend of me got a pc with 8 gigs of ram installed windows(8.1) is detecting all 8GB but I can only yous 3,94GB. Got some ideas what can be the problem? 

No OC 

Thanks for answers

 

are you looking at windows task manager? generally speaking, windows will gobble up half of the Ram and leave only half of it "available". unless you are trying to create a ram disk/cache, this shouldn't be of any concern. 

 

otherwise, what @mopman94 said (booting with one stick, than booting with the other stick to see if either is defective) is the decisive solution.