[GUIDE] Fixing video playback & enabling unofficial OC. (5650m and possibly others) Now, before I start, here's what you should know first. I based this guide on my laptop, a Sony VAIO VPCEA16FG, which has a Mobility Radeon HD 5650 clocked at 450/790. Video playback problems may not appear on many other cards, even the same ones as mine but on a laptop from different manufacturer. Overclocking problem is focused only on the inability to set clocks with Afterburner due to missing atipdlxx.dll file on driver sets after 12.1 WHQL. The OS I'm using is Windows 7 Home Premium 64-bit, so while these steps might still be applicable on Vista or WinXP, it might not be for Windows 8; you're welcome to try, though. And the video problems I meant are : Black/blank screen on any video; DXVA or not. Green/static with mostly green on Flash videos. Fixing video problems First, download this. Use 7-Zip to extract it. (and yes, you can now throw that WinRAR trial/crack away since 7-Zip opens RAR files just fine) You should now have these 4 files: atiumd6a.dll atiumd6a.cap atiumdva.dll atiumdva.cap Now, you need to copy atiumd6a.dll and atiumd6a.cap to C:\Windows\System32\ directory. Next, copy atiumdva.dll and atiumdva.cap to C:\Windows\SysWOW64\ directory. If you are using 32-bit Windows 7, just copy over atiumdva.dll and atiumdva.cap to C:\Windows\System32\ directory. Why does it seem the file placement is inverted in 64-bit Windows 7, you ask? I don't know. =b And yes, you obviously have to overwrite (replace) the existing files. Enabling unofficial OC in Afterburner on 12.2/3 WHQL and newer First, you need to make sure Afterbuner isn't running. Close it, stop it, kill process it, whatever you need to do. Just don't uninstall it. Download this. Put it inside your Afterburner installation directory. e.g C:\Program Files (x86)\MSI Afterburner [alternative method] Spoiler If you want to use an atipdlxx.dll file from a Catalyst set of your choosing, you can get the file from any version prior to 12.2/3 WHQL, like [THREAD=357787]12.2 Preview[/THREAD] and under. Just run the installer, let it extract the files, then cancel when the setup windows shows up. Navigate to the folder it extracted the files into, and copy the atipdlxx.dll to Afterburner's installation folder as indicated above. Now press Win+R to bring up the Run window, locate the MSIAfterburner.exe file, double-click it, but don't run it yet. Add "/XCL" after the double-quotes, separated with a space. So it'd be something like this: "C:\Program Files (x86)\MSI Afterburner\MSIAfterburner.exe" /XCL Now you can run it. If everything was done correctly, you should see a pop-up notification saying you have to restart your PC. After you've restarted your PC, you should be able to OC your GPU using Afterburner. I've tested this method on multiple Afterburner versions up to 2.3.1, which works fine, but I haven't tested 3.0.0 betas. If you can still enable unofficial OC in Afterburner on 12.2/3 WHQL and newer, chances are you have installed 2.2.3 and installed newer Afterburner versions without uninstalling the older version. Afterburner 2.2.3 had atipdlxx.dll included by default, but newer versions don't. The /XCL method also enables the 'Performance' tab on CCC, which is basically Overdrive. So, you can either set your OC with Afterbuner or via CCC. Closing notes If you have problems upon restart, disable driver signature enforcement by either pressing F8 on boot-up just like when you want to enter Safe Mode, or using ReadyDriverPlus for a more automated means. You can get RDP from here. This only applies to 64-bit Windows, since 32-bit Windows, IIRC, doesn't have such driver signature checks. RDP doesn't support Windows 8, so Windows 8 users have to do it manually. Adding from what xacid0 pointed out below, PowerPlay feature is most likely not going to work if you're using 8.960 unofficial sets from marthand. Thanks to leucos for rectifying which files are really needed for fixing video playback. And just in case it's needed for another bug hunting, I put the excluded files from the original file list here. atiumd6v.dll atiumdmv.dll atiumdag.dll atiumd64.dll As always, I'm open for correction. Well, HTH.