Windows operating system is a very popular and easy to access operating system that helps you very much to complete your technical works. In the Windows, you may get Windows stop error 0x00000040 on the computer screen. The BSOD error 0x00000040 in Windows comes to you due to bad boot sector or due to problem with the Windows hard disk. After getting the error issue, you cannot be able to access any files or applications, etc. In this situation, you should go through some manual or automatic error fixing methods recommended here. You can also download and install Advanced System Repair tool to fix the issue automatically.