There are many kinds of Windows errors, such as dll errors, exe error and drive error etc. No matter what error your Windows got, your software or hardware can not perform properly. Usually, the Operating System gives users warnings with error popups when something is wrong. Besides that, they also warn us of some conditions which could also result in further problems later on. Those error messages often appear in a form of modal dialog box, notifications and balloons etc. Sometimes, the error keeps popping and bothering us until we fix it.
Any single Windows error indicates that there is something wrong with your system and you need to take good care of it. Since registry is the central base storing the configurations of your system and applications, as time goes, these errors will make your registry corrupted and unstable, which will dramatically affect system performance in a very negative way. Your PC runs extremely slow and you have to wait for software to open, for your registry needs to search thru all the entries so as to launch a software properly. If those problems are accumulated and not fixed, you will constantly error popups, blue screen of death and system corrupt. What's worse, some spyware and malware can make use of such errors for malicious purposes.