In "msconfig.exe" under the boot tab, click on Advanced options, then make sure that the Maximum memory box is unchecked.
If u have ....
Also check your BIOS settings to make sure that "Memory mapping" is enabled.
If it is, then you may need to update your motherboard's BIOS to the latest version.
I removed all the dims and placed them back in
max memory is indeed unchecked
Could not find the option in bios for memory mapping
bios has been updated
Nothing is changed, i included screenshots of my bios to see what i am talking about.