Browser problems.

Hey guys, I'm usually pretty savvy when it comes to computers and software but I am 100% stumped on this one...

I've tried several different internet browsers, including, chrome, firefox and internet explorer. All have the exact same problem...

I am able to watch a video on youtube or any other site, but if I type something while that video is playing, it becomes horrible crackly and slows down and starts to echo, as if you were to stretch the video with out adjusting the audio pitch.
I've also noticed that with Chrome, the "back" button is a massive fail and apparently if I click on a link, it's been clicked 5 million times and I can't use the back button unless I right click on it(5million is a massive exaggeration... But here is a picture to show what I mean.


If you look at the top left, it shows the same link being click 4 times even though I only clicked it once.

I think the video problem is so frustrating that I nearly ended my monitors life yesterday while watching the Football(soccer) because of this shit lag.

Any help would be appreciated, thanks.

1 - I would wonder if you have a lack of ram or your sound card/on board sound is going.
2 - Driver problems
3 - Virus
4 - Video card

i would think that it migth be adobe flash player causeing this issue does it do it any other time like when just looking at a page without videos?

Just suggestions:

Run CCleaner and fix up the registry and do a cleanup of everything else

Re-install audio and possibly audio drivers

Re-install flash

Re-install windows if all else fails?