Computer running extremely slow.

martin97

Honorable
Jul 17, 2013
17
0
10,510
Hi,
So today i switch my computer back to my full tower case from a Bitfenix Prodigy. I originally had it in this full size case but changed it to a mini-itx. I decided today to switch it back. After doing this i turned it on and it is running extremely bad. I ran 3D mark on it and its so bad. It was running about 100x better in the prodigy case.

my components are

GTX-780
Core i5- 2500K
ZH77A-G43
8 GB ram
1 TB HDD
 

martin97

Honorable
Jul 17, 2013
17
0
10,510


I didn't fresh install because there was already a version of windows tied to the old motherboard. Could that be the cause?
 


Absolutely. Don't change motherboards without reinstalling Windows, all of the control drivers have changed.
 

martin97

Honorable
Jul 17, 2013
17
0
10,510


Even if both montherboards are running Windows 7?
 


100%
Always reinstall Windows if you change your motherboard.