Major issues with all Internet browsers!

Do you think updating BIOS could have some effect to this? I can try re-installing Flash(64Bit) again to see if any difference. I could possibly try updating chipset?

No, I don't think it's a BIOS issue. It's clearly in the Windows environment.

Java can be uninstalled via Control Panel / Programs and Features > Uninstall or, like I prefer, with Revo Uninstaller Download Revo Uninstaller Freeware - Free and Full Download - Uninstall software, remove programs, solve uninstall problems. You can pick the freeware, that's the one I have.

After uninstall, go to Java download, and install the latest --- BUT IN FACT, you don't need to uninstall the old, you can just take the new. It will replace the old.

Going further, a Registry check / fix might not harm. I've been using Free Window Registry Repair: a windows registry repair freeware. for several years, no problems, and I think I have gained in speed.

Like Mickey Mantle stated, It ain't over 'til it's over. Problems are meant to be overcome, eh?

Thanks for the reply Titanic, but the problem isn't Java, it is Flash player. I have Java 7u4 JDK and JRE installed and they work fine.

I will try the Revo Uninstaller and the Registry fix though!

There are alternatives to Flash, Is there an alternative to Adobe Flash Player? - adobe flash alternative | Ask MetaFilter, but I must say I don't think that's the ultimate solution. I would agree with ickymay that it could be a driver issue. DriverMax has proven to be a reliable help with updates, DriverMax - free driver download program for Windows XP & Vista.

Dunno, but best wishes.

You might run some of the troubleshooters in the Control Panel. There is one for audio playback and performance issues. Maybe one of them could give you some guidance.

Along with that, the Resource monitor is something you could watch to see if any strange CPU or network activity shows up during the playback? Maybe find a video you could download to see if it would work if not being streamed.

Does your Network connection seem to be OK otherwise? Does just enabling the flash player cause the problem, or do you actually have to try viewing a video?

Hey Saltgrass.

I can watch some video players fine(I watch Anime a lot, lot's of different players around the web) and all of them use Flash and all of them work perfectly. It's only Youtube player that is lagging a lot. But I still get unresponsive browser with Flash Player plugin turned on.

So in a nutshell, Flash player lags my browser and does not like the Youtube player.

Here are a couple of links, in case you have not found them.

Adobe - Flash Player

Flash Player Help

You might also see if you can right click the YouTube video and see if it offers some troubleshooting options.

The only thing I could even imagine might be going on is some video is still trying to run, possibly corrupted and causing some problems. It would make sense that uninstalling the Flash Player would stop any such activity, but not really sure.

When I use Process Monitor to watch Firefox play a YouTube video, all I see is Firefox.exe, which seems to receive data and put it in a media cache. I do seem to see Microsoft Security Essentials checking some of the downloaded content.

I would probably start Task Manager and watch the Networking tab to see what was happening with the stream. If a drop in transfer rate coincided with the problems you have, it might be related.

Hey Saltgrass.

I did a test with the Networking Tab you suggested. I watched a YT video at 1080p and man.. lagcity... Here's the picture of how my Networking tab looked like after about 2 mins of the video playing: http://i.imgur.com/xng5B.png