I have been having problems with my ATI Radeon HD 5870, here is a brief summary of what happened:
A few months ago a bought a new PC with a bunch of really cool stuff in it, one of them was a graphics card called "ATI Radeon HD 5870". I recently bought the AVATAR movie on dvd and wanted to watch it on the pc, so I incerted the disc and opened it up in Windows Media Player and I got a message saying:
"Windows Media Player cannot play this DVD because it is not possible to turn on analog copy protection on the output display. Try installing an updated driver for your video card."
So I went to the graphics card website and downloaded the new Driver for the Graphics card and it downloaded and installed, but after it installed I went over to Devic manager looked up the device and in the Device stus box it says:
"Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"
I have downloaded this driver countless times from different websites and using different internet providers and I always get the same damn message.
Also heres my system spec:
Windows 7 Ultimate 64-bit
AMD phenom 2 X4 965 Processor
ATI Radeon HD 5870
Basically, its saying that the ATI Drivers are not digitally signed and the only way to combat this, is to press f8 every time you start your computer or, you could reinstall Widows 7 with the video drivers already on. Found that out here: http://social.technet.microsoft.com/...2-1fa7a44f72d1
I just uploaded a quick video showing you what it looks like in device manager: http://www.youtube.com/watch?v=2poLD...&feature=email
If anyone knows any way to fix this problem, please post below