my board not accepting more memory

[shaneuk]

some strange reason my x7dvl-e motherboard only showing 6gb out of 8gb I installed I had to mess with some chip settings for it to go from 4gb to 6gb in windows 7 I downloaded cpuz and it said 8gb but windows and bios says 6gb

need help to make it show 8gb

 

[LukaBoki]

Do you have a 32-bit or 64-bit Windows 7?

 

[shaneuk]

64bit