DLL or dynamic link library files located at the C drive of system sub folder might get corrupted out of so many reasons. You may get messages like DLL missing, location path not found etc. Here read few problems of common dll files and solution process.
DLL file missing:
While playing games like Skyrim in a computer running on Windows 7 64 bits operating system, an error message pops up on the screen mentioning D3dx9_43.dll file. The message says that the file is missing from the computer. Since installing updates of the Nvidia Geforce GT550m video graphics card and Intel HD graphics 3000 of the computer, this error starts. This DLL file is a component of DirectX that is required by the computer for gaming. Such DLL errors' fixing is always easier with software.
Specified module missing:
After installing Avast antivirus in the computer, an error message keeps on popping up while installing updates. This antivirus installation perhaps deleted the trustedinstaller.exe. Updates installation process says that specified module is not found for the msls31.dll along with error code 126. The service also does not start from the Services of Windows manually. You may try to remove the antivirus from the computer for quick fix. Apart from that, you can also try to create a restore point or can run command lines like sfc / scannow for fixing DLL errors. You need to open the command prompt from the Start menu for running the command.
Location path missing:
While accessing Windows Photo Gallery in a computer running on Windows XP 32 bits operating system, an error message pops up on the screen saying Windows cannot access the specified path or the rundll.dll file. The message also says that you may not have enough permission for accessing the same. The computer also shows the same error message on accessing personalization themes such as screen saver, themes and display settings. In that case, you should search for DLL errors fixing process.
Removing the errors:
You can download and install DLL Suite for fixing DLL errors from the computer. This suite is greatest for removing any kind of program file issues from the PC as well as to optimize the machine.