When I first installed the dual system, the capacity for the Ubuntu system was too small, so that the Ubuntu system disk was full after not being used for a long time. I wanted to expand the capacity of the Ubuntu system. Although the expansion was completed, it was found to be useless. The main disk Still a lot of capacity. So in the morning, I planned to uninstall the Ubuntu system and reinstall it, but in the end some problems occurred, which made it impossible to enter the Windows system. In the end, I had no choice but to reinstall the system.
My computer is HP Night Elf 8plus, i7-12700H, with 16GB of RAM. It was reinstalled using a USB flash drive. The reference tutorial is:
1. System reinstallation
Reinstallation system tutorial (back up important data before reinstallation): https://www.bilibili.com/video/BV1D5411S7vL?share_source=copy_web
The download address is: Download link: https://wwu.lanzoum.com/b03pbtsda Password: bdhk
Note: (1) If the U disk is inserted, but there is no option to enter from usb, adjust the boot sequence in the boot menu -> the far right;
(2) After the computer reads the win11 startup file from the U disk, unplug the U disk before restarting, otherwise it will read files from the U disk in a loop.
2. win11 decompression
Win11 decompression tutorial: https://www.bilibili.com/video/BV1MN4y1K7Y7?share_source=copy_web&vd_source=0e43117f2fd1276fcfcfba92d4ad6b50
If you enter the Windows page but there are no options such as Bluetooth and WiFi, the solution: use the mobile phone data cable to connect the mobile phone to the computer, and use the mobile network sharing of the mobile phone to share WiFi to the computer --> open settings --> windows update.