RAM adding problems,help needed

jaakkomm

Honorable
Jul 8, 2013
7
0
10,510
So im having littlle problems with my RAM and i will now explain what has happened.

I have 4gbs of ram adn W7 64bit

I bought 2x2 DRR2s and installed them correctly,after i booted i got a black screen.
Now i took the other one out,turned the PC on again and it worked. Only problem is that it shows i still have 4gbs of ram. Funny thing is that my old ram doesnt count,its one new RAM slice and an older RAM slice.
I should have 6gbs but i only have 4 and my older one doesnt seem to show up.

Can anyone help me :??: