Dell computer turns on and shows icons, then doesn't move

1.Quickly press F2 when booting up to confirm if you can enter BIOS setup, exit and reboot.

2. Press F9 to restore BIOS factory settings after entering BIOS setup, and press F10 to save and exit.

3. Confirm that there are no peripheral devices connected, such as U disk, dongle, scanner, removable storage devices, etc., please clear these devices.

4. Confirm whether there is any alteration of hardware (such as increasing memory), please restore to the initial state.