In the Windows computer, you will see that some applications works very fluently and some works somehow very slowly. It is a very critical situation that happens with many of the Windows users. Sometimes when you try to open or start any apps, you may get Windows stop error 0x00000045 and the application that you want to start gets stuck. The stop error code 0x00000045 comes usually in the computer due to bad boot sector, installation of some corrupt files, problem with the hard disk, etc. In this situation, you should go through some manual or automatic error fixing methods. But make sure that you have a sound technical knowledge to get rid of the issue. You can also use Advanced System Repair tool in the computer.