The red triangle is the trademark of the motherboard, and the English letters are the BIOS information of the motherboard. If you stop here and can't enter the system, it means that the motherboard self-test can't be carried out normally, which means that your computer hardware self-test has problems and failed. You can press the DEL key continuously when the computer starts to enter the CMOS setting to see if the hard disk is recognized by the motherboard. You can also turn off the computer, open the chassis, plug in the data cable and power cable of the hard disk again, press the memory tightly, and then turn on the computer to see if you can enter the system.

Simply put, the motherboard self-test is unqualified. If you understand that the computer is a minor problem, if you don't, just find someone to fix it, and don't be hacked.

Press F8 when starting the machine until advanced options appear. Select "Last Good Configuration" and enter the repair. If you can't press F8, you can enter safe mode to restore the system or reinstall the system.

Discharge the BIOS battery (restore the BIOS factory default). It is recommended to plug in the graphics card and memory, clean it up and polish the golden finger of the graphics card and memory (if you can't solve it yourself, fix it).