Asrock z77 pro4-m ram slot doesn't work

YeXZ

Honorable
Aug 30, 2013
10
0
10,520
Hi all, hope some help.

Two days ago i installed my new heatsink hyper 212 evo and i ned to unmount the entire motherboard.

After that i switch on my pc and after 3 sec or so my pc started rebooting. I made some test and i concluded that slot ram 3 and 4 doesnt work. Right now i'm using ram slot 1 and 2 (that means it is not dual channel).

My memories are corsair vengeance 2x4gb. I have some questions:

-¿Is there any noticeable diffenrece between single channel and dual channel? I play games mainly.
-¿Is there any way to fix the ram slot (i just need one for dual channel)? Nothing drastic, i still have the warranty up but i don't feel myself opening the case again xD.

My pc is:
-i5 3470
-asrock z77 pro4-m
-superflower 450w green power
-sapphire 7870