For example, you got a computer. Acquaintances gave the old system unit or were donated by relatives, in principle, the background is not so important. The first thing to know in this case is whether the Windows operating system is installed. This is not such a difficult question.
Necessary
computer
Instructions
Step 1
Turn on your computer and wait for it to boot up. If Windows has booted, and the Start button, desktop, and shortcuts appear on the screen, then the Windows operating system is clearly present on the computer. You can see the version and bitness of the operating system in the properties of the computer. To do this, click on the shortcut "My Computer", then right-click and select "Properties".
Step 2
If, when the computer boots, the process stops at the Windows label or a blue screen appears with an error, then the operating system is installed, but cannot boot due to system failures. It is up to you to restore the old system using the console or service utilities, or immediately reinstall it.
Step 3
If, after turning on the computer, an inscription appears on a black screen, and the download does not proceed further, you need to decrypt this message. Ntldr is missing indicates that the computer cannot find a boot partition. First of all, turn off the computer and check if the hard drive is connected to the power supply and the motherboard, and whether it is detected in the BIOS of the motherboard. If the hard drive is detected without problems, but the system does not boot, go to the next item.
Step 4
Use service utilities or an alternative shell to inspect the contents of the hard drive. If you do not find the Windows folder on it, then obviously the Windows operating system is not on the hard drive. If all the required folders are there, and everything is in order with the equipment, and the system still does not boot, reinstall it.
Step 5
Recovering an old operating system after a major crash is more thankless than rewarding. After recovery, even if it succeeds, Windows may not work for long, and along the way it will torment you with constant errors.
