This situation is very common under WIN7, but it can be repaired. You need to restart first and keep restarting. If it still doesn’t work after about ten times, press F8 when the product logo appears after restarting to enter various modes. If it still doesn't work after trying everything, you can take off the computer battery, unplug the power cord, put it in a ventilated and cool place, let it cool for about 10 minutes, install the battery and plug it in. This time Start WINDOWS normally and keep pressing the ENTER key, basically just wait for a few minutes. I think there are three reasons for this: 1. The computer CPU is overheated and has poor heat dissipation, resulting in work failure (the most basic reason, and the last one) It must be taken seriously)

2. There are mutual attacks between the background software, resulting in incompatibility (this problem occurred when I started 360 and QQ Butler at the same time)

3. Due to the old Deinstalling the system resulted in a few "bricks" missing when loading basic Windows components (last time I tried to install the BIOS from this store, it caused a blue screen). Well, these are my gentle suggestions for normal startup recovery of a blue screen. If what I said is correct If it doesn’t work, then you can choose to rebuild the system or disassemble and unplug the memory stick to wipe the gold finger and other old methods