Is there a way to get rid of that if that's bad?

Nope I found the problem, even with the "Driver Fusion" thingy there were still 'leftovers' of newer drivers...
Ended up using "Windows Install Cleaner" and it worked... Now using 12.8 because I was too lazy to test 13.1 after it... I will though, later...

Huge thanks for helping me, though can I ask you another favor? (Sorry I've only been mining for like 2 days so I'm quite a n00b):
can you explain  this to me?
http://gyazo.com/b4f636776ea600c703bc48b1b604352f
The finished and (accepted) shares were even untill around an hour ago (It's 2 hours ago that it started working at all), now I see that the number between the () are way less... Is this really bad? And if so how do I avoid it? (I am using Slush's Pool and both GPU's (2x Sapphire HD 6770s) are using the flags: "-v -w128 -f0"), they both use the same 7 out of 8 cores of my cpu...

13.1 does not work for me... I keep getting a message at the end of the Installation to view the log, the log says, at error messages: "Error: Installation Failed"
Well that sucks...
installing 12.8...

Thanks, I'm installing 13.1 right now.

Thank you very much, so I can assume you had this problem too? I'll be trying versions out this week, thanks again

EDIT: https://bitcointalk.org/index.php?topic=189101.msg2334100#msg2334100 <- maybe that works, I'll be offline for now too

Well thank you, I'll try. Have you tried every higher version than that? And thank you a lot for helping me I will tell you whenever I'm done, will be tomorrow probably, since I have other stuff to do

Do you know a solution to this? (Also I have found that "-v -w128 -f0 AGGRESSION=12 FASTLOOP=false" I think works best as flag)

http://gyazo.com/686a574f23fb4000fc34a4aed21da44e
2012-12-03, so: yes

thanks, my Mhash/s went from 130 up to 170! but I still have the same problem :C

Well, first of all: I don't know how to change the adress in GUIMiner...
Second: I don't think the adress is the problem since my CPU is working without connection problems (I think)...

I am posting this here since I am a newbie and therefore unable to post this in the hardware section.
My GPUs are working at a normal rate though I randomly see them having connection problems and they're not generating any BitCoins...
(This is in Slush's Pool and the GPUs are two AMD HD Radeon 6770s)

http://gyazo.com/efae1faad733038ad24cb190c32e537a
and here's the console: http://gyazo.com/c63f64663f7477c5252b3aa0994f7597

I have found that downgrading the Graphics driver (I am on 13.11v9.1) and deinstalling the newer OpenGL versions fixed problems similar to this for other people, though I like to play games (such as BF4) on this desktop too and downgrading to ~11.11 would influence the performance in games too much for me, I think. I am okay with downgrading to 13.9, but I'm not sure if that'll fix the problem. Are there any other ways of fixing this problem (with keeping the driver version above 13.8 )?

I'd like to hear from you, and thanks for any upcoming suggestions/answers!