Even after you have installed your Windows operating system, apparently without problems, this doesn`t mean that certain elements can`t cause problems and conflicts. To make sure that all is well, and check your system efficiency, use a program like Passmark OSCheck.
Passmark OSCheck checks all the elements of your Windows installation, verifying that there are no corrupted files, hangings or conflicts between versions, informing you of all anomolies it finds. It will also detect suspicious changes to the system (that can have been done by spyware).
Thus, thanks to Passmark OSCheck, you`ll keep your Windows operating system with its Standard configuration with which it was installed.