source: http://forums.amd.com/game/messageview.cfm?catid=260&threadid...'
I had a similar problem, only my comp would just restart while in 2D mode while randomly watching a youtube clip or playing random flash games, but i did fix it
First you should uninstall your driver then use driver sweeper in safe mode.. then reinstall driver using the custom setting without the HDMI audio driver selected.
Then you forced 3D clocks at all times by doing the following steps:
1. Make a new profile under options in CCC, under composition check your monitor(s) if you have 2. once you've done that click SAVE and close, but DO NOT ACTIVATE YET
2. You need hidden folders enabled, go to start, type "folder options" on the search bar, click view tab, look for hidden files and folders, click show hidden hit ok. once you've done that, go to C:/Users/Account Name/app data/local/ATI/ACE/Profiles/. Open the new profile XMS you just made with Notepad.
3. I cant give you the exact value because diff brands use diff clock speeds but look for <Feature name="CoreClockTarget_0">" the 2 value parts needs to match the 3rd line
4. look for <Feature name="MemoryClockTarget_0"> once again they need to match the 3rd line
5. <Feature name="CoreVoltageTarget_0"> matching 3rd line again
Your .XMS should look something like this but DO NOT use these exact values, they could damage your card. they just need to match your 3rd line, thats all.
<Feature name="CoreClockTarget_0">
<Property name="Want_0" value="85000" />
<Property name="Want_1" value="85000" />
<Property name="Want_2" value="85000" />
</Feature>
<Feature name="MemoryClockTarget_0">
<Property name="Want_0" value="120000" />
<Property name="Want_1" value="120000" />
<Property name="Want_2" value="120000" />
</Feature>
<Feature name="CoreVoltageTarget_0">
<Property name="Want_0" value="1200" />
<Property name="Want_1" value="1200" />
<Property name="Want_2" value="1200" />
</Feature>
<Feature name="MemoryVoltageTarget_0">
<Property name="Want_0" value="0" />
<Property name="Want_1" value="0" />
<Property name="Want_2" value="0" />
After you've done all this, you can activate the profile.. go to CCC, options, profile, activate.. only downside is each time you restart you have to reactivate it ati needs to make a perma fix *sigh*