glnd
Hello there,
Could you please send us a picture of SN code(two lines) at the bottom of machine ?
You can try to clear CMOS : Please turn off the PC , unplug the power supply and HDMI cable , and press the CMOS pinhole for about 10 seconds.
Ten minutes later, plug the power supply and HDMI cable, turn on the PC again.
Here is the tutorial :https://mega.nz/file/XypwTISY#DVT0BsjOgiPkZ-drQaj88JH9Z7f7qpKGP2E3nMHW8ms
Have a nice day~