This worked for my blue/gray screen/lines!
I had the line issue throughout my screen. Then I tried changing my resolution to 1650x1080 I went from having blue/gray lines on my screen, to a total screen full. I couldn't even see the screen to change the resolution back and uninstalling/reinstalling didnt work as well as cleaning the registry.
I found this 3rd party tool and I changed my resolution back and it got me back into the game. You can also manage your sound, console and other misc. controls. It's a really well done app.

Download here:
http://www.rush-zone.com/downloads/gaming/brink/brinkconfigv1.4/summary.html

Here's the info on it:
http://www.rush-zone.com/downloads/gaming/brink/brinkconfigv1.4/details.html

I am running SAV and Spybot/Malwarebytes and so far nothing showed up...but as always, run at your own risk and please post if you see something suspicious.

LOTS of good troubleshooting tips here:
http://www.gamebrood.com/2011/05/10/brink-pc-fix-and-fixes-to-crashes-errors-startup-issues-low-performance-graphics-glitches-and-many-other-technical-problems/

yeah the person made that for crysis2 aswell so its safe

Yeah man...it's money. It really is pretty cool. I just used it again to set my motion blur.

Used this to set motion blur...again, this is a GREAT tool you guys. Bumping so it doesn't get lost in the shuffle. Try this if your having video or sound issues.

This app keeps crashing on me, any ideas as to why?

Are you running Windows 7? IF so, try right clicking on it, properties and run it in Compatability mode. I am running XP SP3 and it worked fine.

( this file to download does not work at all!)

What? the steam folder as xp service pack 3.
Dont have any brink shortcuts on desktop!

Wow...they must be getting hammered...the site doesn't come up for me either. It's just sitting there trying to load. Anyways, look for BrinkConfigv1.4...but watch the sites because a lot of them kept pointing me back to Rush-Zone...which is the oiriginal location that we can't get too now.

I did find this one...but it looks like a newer version so I can't verify it.

http://download262.mediafire.com/5cw3cyvx76wg/3e8hv5cuahad6c8/brinkconfigv1.20.zip

If you want to give me your email, I'll send v1.4 to you (or anyone else). I mean as one gamer to another...we all gotta stick together dude. So let me know and good luck.

I have both 1.4 and 1.5 and tested them both but still no sounds or lossing sound after a while, but come back on next map annoying to play a map with no sound, othervice the are no problems!
Now I wonder if steam should go in xp sp3 mode, but i try it now lets see if thats helps!