Let's talk about the first situation first. The system in the hard disk is damaged, or the boot area of the hard disk is damaged. In this case, there is no operating system. You can use winPE to boot, re-clone the image, or repair the boot area (that is, the reconstruction MBR of hard disk partition software).

In the second case, "unable to start directly" refers to a black screen. In this case, the power line and data line of the hard disk are short-circuited, which causes the motherboard to fail to start protectively and continue to start, thus damaging the motherboard components.

In the third case, "can't start directly" means that there is a display on the screen, but it doesn't enter the windows environment and stops at a certain step. In this case, you need to keep asking questions, and it is best to provide screenshots or give detailed English tips, and we will continue to judge.