I’ve installed the memory and hard drive to the TANK mini PC, but the computer keeps black screening and I can’t access the BIOS.

When you first install or upgrade memory, the BIOS needs to read and save memory data. This process usually takes 5 to 15 minutes. Once the computer boots up normally, it means it has successfully read and saved the memory data. After this, its boot time will go back to normal.

So when you change the memory or update the BIOS, make sure to check if the TANK mini PC starts up successfully after 15 minutes. It’s normal for the computer to stay black screen before that, so don’t worry too much.