I hope this is the right forum...

Anyways, my computer has started to lose the dvi signal whenever I try to stream video from the internet. I have tried watching trailers on steam, going to youtubes website to watch video, and tried vimeo. All these sistes cause my computer to lose dvi signal and the only option is a hard shutdown since I can't get anything back on screen. I can't hear any audio after the screen shuts off either.

Everthing works fine when playing games in full hd 1920x1080 with aa on and everthing, no black screens. It works perfect. I can also watch movies I have stored on my computer with no problems.

Everything seems like its working perfect untill I go on youtube/vimeo etc. Then the screen just shuts down. I don't know if this is a screen issue, a video card issue or what...

Please help!

Evga 9800gt 512mb gpu Amd phenom 9150e cpu Antec ea-650 psu Asrock A785GM-le 500gb hdd

I do have the videocard and processor slightly overclocked, but I have the same results on stock settings aswell... it happed before I even overclocked anything in the first place.

does anyone know how to fix this? and ideas even?

Need the following questions answered by you:
 
1.  Are you using a headset to listen to sounds, or is the sound output connected to your monitor?
2.  Do you have Adobe Flashplayer and Quicktime installed?
3.  HDD is connected by IDE?
4.  Any other cards occupying your PCI slots?
5.  What video driver are you using?
6.  Can you watch videos on Hulu, or can you watch vidoes with a DVD/Blueray player on WMA?
7.  Do you use EVGA Precision X or MSI Afterburner or GPU-Z to monitor your gpus and temperature?

1. no im not using a headset, im using 2.1 speakers connected to the pc, no the monitor speakers.
 
2. yeas i have flashplayer 11 and quicktime installed
 
3. HDD is connected via sata
 
4. i onlt have one pci-e slot and that has the 9800gt in it, none of the normal pci slots have anything in them
 
5. im using 301.42
 
6. i have not tried hulu, but i do have movies on my hard drive i have watched that work just fine in divx. have not tried any dvds yet but  can update after i try.
 
7. i use evga precision to monitor it, temps have not been above 50c. i have been playing Call of Duty: World at War alot lately and that works just fine an max settings

i decided to try everything in internet explorer and see if it worked or not. all video streaming DID work with internet explorer.
 
i was using firefox 13 before, when i was getting the streaming issue. i uninstalled firefox completely and reinstalled it. still getting the streaming issue... still dont know how to fix it.

I would next try an uninstall and reinstall of the Video Driver.
 
Follow this guide to help you:
http://www.evga.com/forums/tm.aspx?m=1174372