You will need
- - installation disk;
- - ERD system.
In this case, each restarting of the computer may carry unpleasant surprises. In particular, after diagnosis will be made by the equipment, nothing happens, i.e. the OS will "hang" during the boot process. Or will it just appear a black screen with a blinking cursor that does not respond to any of your actions. If the OS still be able to boot, it can start to behave unpredictably: issue messages about unknown errors, "hang" in the process, to ignore certain drivers and much more. In Windows XP Professional all these problems are quite easily solved.
If the settings of your operating system restore is not prohibited, then at the end of each session, installing new software or drivers, add devices, etc. the computer automatically creates a checkpoint, i.e. it "remembers" and stores the system configuration at the time the session ends. You can also create them yourself.
At any moment you can return to any of the control points, i.e. to restore or "roll back" system. All PC settings will be the same at the time of the checkpoint, while maintaining all created documents. This can be done by standard means of Windows: "start" - "Programs" - "Accessories" - "system tools" - "system Restore". But what if the OS "hangs" during the boot process or not loaded at all?
While the computer performs the diagnostics of the equipment, keep clamped the F8 key, otherwise you may miss the right screen. Then instead of the usual icon appears in the Windows list of the various methods of booting the system. The simplest of these, which is fit in this case is "Download the most successful configuration (with efficient parameters)". Moving between menu items with the arrow keys, select the method and press Enter. The system will load the last known good configuration, i.e. the reference point when the computer was turned off in the usual way. For Windows this means that you did not have claims to its work.
After booting the system, verify its performance: does not hang up if she does not appear any error, all programs and drivers are working normally, etc. If its work you are still not satisfied, try to do it another way. Restart your computer again, but now start OS in "Safe mode". In this case, loads only a minimal set of drivers and programs that access the network connections is missing. If in "Safe mode" system is working correctly, then your assumption is correct: the failure is associated with a hardware upgrade or software.
After the de-energizing of the computer, disconnect any newly installed device, connect one of them and run the system in normal mode. If it again fails to start then this is the device that was the cause of the problem. Perform this procedure with all new devices. Check hardware compatibility with your OS, install the drivers going complete with it, download them from the official website of the manufacturer or "roll back" to a previous, working. If these measures do not help, you most likely will have to abandon the use of hardware with this OS.
If the system does not start continue without recovery console you can not do. Just keep in mind that its development is not an easy task for a not very experienced user. But if you are the owner of Windows XP Home Edition, even in the presence of the installation and emergency disk without the help of qualified professionals, you are unlikely to do: it requires certain knowledge and skill to use. Her commands are written in DOS format, require a precise knowledge of syntax, as well as necessary for your purposes operators. You will be easier to reinstall the system using the same installation disk.
Don't forget that when you reinstall your OS you will lose all data stored on your hard drive.
To see the commands to restore the system from the console you can in the "help and support", but remember that "Help" you need to use the OS that is installed on your computer.