Hi,
I would suggest you to try uninstalling and installing the Kmplayer and check if it works.
I would also suggest you to contact Kmplayer support regrading this issue. To do so follow below link:
http://www.kmplayer.com/forums/index.php?s=8b6f0772c0f9b2f6aa3f080effd0a652
windows resource protection found corrupt files but was unable to fix some of them."
The above error message indicates that the system files are corrupted. You have to perform a repair install of Windows.
I would suggest you to back up the data and proceed with the repair install of Windows
http://windows.microsoft.com/en-IN/windows7/Installing-and-reinstalling-Windows-7
In above link, you have to follow Upgarde installation Instruction.
Upgrade Installation keeps your files, settings, and programs in place on your computer.