You can run Isoo Bakcup under Windows and perform system restore. Besides, you can use the following two methods to start the program so that system can be done under any circumstance.

1.You can press F3 key to run Isoo Bakcup before system is booted. The shortcut key F3 can be changed to other keys like F4, F5, etc.

2. USB bootable disk of Isoo Bakcup.

When you backup system, the boot option mentioned above is installed by default. If you don't like that boot style, you can unselect it when making advanced settings.

If no boot option is installed, you can follow steps here to install one so that you can perform system restore when Windows crashes.

Click the menu on the main interface and select item "Install Isoo Bakcup Boot Options", as follows:

Select the first option on the message box below and click "Options" button.

You can set up details about the boot option to be installed on the tab Boot and click "OK", as blow:

Delete boot option

Click menu on the main interface and select "Uninstall Isoo Bakcup" item.

Select "Uninstall boot options of Isoo Bakcup" on the uninstall windows.

Make USB bootable disk

Connect USB flash drive to computer via USB port. Then click menu on main interface and select option "Make USB Bootable Disk for Isoo Bakcup", as following screenshot:

Select the USB flash drive you inserted and click "OK" button.