The big problem with the windows operating system is it crashes quite often needing windows XP professional product key to install the operating system totally. In some cases, the operating system can be reinstalled on the existing corrupt version or the Windows XP CD can be used to repair the corrupt operating system. When none of these options are possible, then the final stage will be to use the Windows XP product key to install the OS which is a tedious job and will take an entire day installing various applications.

The installation of windows XP how ever will be completed in about 40 minutes but the installation of the audio and video drivers of the mother board will take time and also the installation of other software's in the system will take many hours and to restore the system back to the normal or older manner, it will be a tough task. Windows XP professional product key will be found in a boot CD and is required and when the computer reboots with the boot CD in the CD Drive, the various options will be displayed.

It is better to note the product key and write it down in a paper or on the boot CD itself and install windows XP option is selected, the operating system will confirm and then the windows XP operating system starts to get installed with the necessary file being copied to the C drive. Then the computer restarts after copying the initial files of the operating system after entering the windows XP professional product key. This will be the next step or restart windows XP professional and when the computer re boots again, the operating system is displayed with the mouse enabled and the control panel and various other setting files are copied and the installation is finalized after a reboot and this will be the final step windows XP professional product key.

In case, if you forget to note the product key, then in the dos mode search for the text file and note the product key in a paper. Once you install the OS without the product key then the entire work has to be re done again as the installation wil not continues beyond this point. The date, time and place must be mentioned and all details asked by the operating system must be provided with the product key and finally the windows XP boots with no external applications installed.