return to a previous state of the operating system is a software method with a special tool, but if it is not available, you can try to change the system date on the computer you want.
- - skills PC user.
If you need to roll back the changes to the system with the BIOS, you can change the system date.Often, this is done if you can not access the main functions of Windows, such as if your computer is infected with a virus or access to it blocked malware, banners, etc.
When you start your computer press Delete.Note that the command to enter the BIOS depend on the motherboard model.On conventional desktop PCs, it looks more or less clear - in most cases, the key delete, and laptops can be F1, F2, F5, F8, F9, F11, Fn + F1, Fn + delete, and so on.
If necessary, enter the password to enter the BIOS.Use the arrow keys to find the menu, change the system date.Move the cursor to the desired position using the +/- buttons to change the system date to the one that y
ou need.Exit the BIOS after saving changes you make.
If you have access to the basic functions of the operating system, roll back the changes through the utility restore computer to an earlier.To do this, open the menu "Start" list of standard utilities, select the utility to restore the system and check the conditions of the operation.
Select with arrow keys the most suitable date for the restoration, click the "Next" after you store all your data and close the current program.Start the recovery process, wait for the computer to reboot independently.
If you need to restore the original BIOS settings, enter it when you start the computer and install the factory settings.If you do not remember the password for the BIOS, open the computer and pull out the small battery for 10-15 seconds - it will bring down all of its settings.
Changing certain BIOS settings may affect the operation of the entire system.
Explore the BIOS interface.
- remove the operating system through the bios