do you have the right catylist drivers and sdk installed? not all amd drivers work.

drivers
http://support.amd.com/en-us/download/desktop/previous/detail?os=Windows%207%20-%2064&rev=12.8     64bit
http[Suspicious link removed]                                                        32bit

SDK
http[Suspicious link removed]                       64bit
http[Suspicious link removed]                         32bit    



edit  they blocked the links anyways search for how to mine litecoins and follow the instructions.
best of luck.

After looking again it appears you need catylist 12.8 or 12.10 been awhile since i had to install them