When you are using your computer, you should be aware of some windows errors which may make your computer perform awfully. DLL error is one kind of the windows errors to which you should pay close attention. If your computer is suffering it, you should try to fix it.What is a DLL?A DLL is a file which collects many small programs, and these programs will be called upon when needed by a larger program or application. In simple word, the DLL allow programs or applications to do certain things.There are a variety of DLL errors, and when it appears on your computer, you can not open certain programs. Some may even create much more other problems.What causes DLL error?This kind of error can take place for a great many reasons. It usually appears when you install or uninstall a software program improperly. When you surf the Internet, this error may also appear because some Trojan and malware can attack your PC and modify the registry. DLL error is frequent when you do not fix registry errors regularly.How to fix DLL error?It is almost impossible to get rid of this error completely by hand because it usually appears unexpectedly, and many users usually do not know their computers are suffering this error until their computers totally break down.But do not worry when you see this error on your computer. You can seek an assistance to help you. Without spending a lot of money or consulting experts, you can use a PC registry cleaner software to fix DLL error. This cleaner can perform an all-around scan of your computer and fix all the corrupted and damaged files.This registry cleaner is easy and convenient to use. With one click, it will list and clear all the PC errors as well as DLL after a two-minute scan. Then you will find your computer run as a new one. Besides this, this cleaner has many other functions. It can help you manage startup programs, Internet Explorer, registry, windows system and memory so that the performance of your computer can be improved.