after setting the BIOS, start the USB flash drive system. Enter the U disk system, press the "Windows+R" key to start running after entering the U disk system, enter "cmd" in the running window and confirm to open the "Command Prompt".

main information:

The common meaning of test mode is to let the windows operating system run in the test state, and the windows operating system can run unofficial or unsigned drivers in this mode.

The test mode is a test mode just like the literal meaning. The logo of this mode is mainly displayed when there are unofficial drivers or key system files running.

for example, it will be displayed after installing large memory patch (32-bit system supports more than 3.8G of memory), TCP/IP connection patch, old virtual network card, old virtual optical drive and other software. Similarly, some software that achieves the purpose of cracking by changing system files will also produce this sign.

in a word, as long as there is a signed driver in the system (without WHQL certification? ) and system files are working, this sign will appear. Also, turning off driver signature authentication through F8 will also generate this flag.