Fragster
Hello Fragster,

Sorry for the trouble.
Don’t worry, the PC has one-year warranty. Please send us a picture of SN on the bottom of the PC and a picture of the purchase record.

Here are some potential solutions: 
Here are the detailed steps for CLR CMOS: First, Please turn off the PC , unplug the power supply, and press the CMOS button (if no CMOS button, please put the pin in the CMOS pinhole and press it ) for about 10 seconds , restart the PC after ten minutes. Here is the tutorial https://mega.nz/file/XypwTISY#DVT0BsjOgiPkZ-drQaj88JH9Z7f7qpKGP2E3nMHW8ms or https://url.bee-link.cn/5FdW  If the problem persists, please try other solutions: 

1.Disable Fast Startup

In Control Panel, click the Power Options. Select the Choose what the power buttons do. Uncheck the “Turn on fast startup.”, click save changes.

2.Disable Automatic Restart

One of the best solutions to fix the sudden restart error is to switch off the Automatic Restart option. This solution is a temporary solution, though.

When you disable the automatic restart feature, it blocks the operating system from rebooting. However, if misused, that can harm system functions more than fix the issue, so proceed with the steps carefully on Windows 11.

Step 1: Open the Settings menu > System > About.

Step 2: Choose Related Links and tap on Advanced System Settings.

Step 3: Under the System Properties sections, go to Advanced > Startup and Recovery > Settings.

Step 4: Then, uncheck the Automatically restart choice under System Failure and press OK.

3.Reconfigure Network Adapter.

Right click start—device manager–network adapter–wireless/WiFi–properties–power management–Disable the option about allowing the device to access the computer system wakeup. Press OK.

Best regards!
Yue
Customer Support 

Fragster
Hello there,

Sorry for the trouble.
Don’t worry, the PC has one-year warranty.

Here are some possible solutions:
①Please take out the RAM ,please clean the contacts of the RAM with a rubber. Here is the tutorial https://mega.nz/file/XqZX0TIR#_DtO2oa4aRP4bWtvxgKLj4QGhBpQ959cg5U3Yw4u1Cc or [https://url.bee-link.cn/AzzB]**

②Please take out one RAM and leave the other one in it to test if the RAM is defective or not.** You can also use Memtest software to test the RAM.

③Overheating. If your PC is overheating, please check if the fan spins. You can also turn off the turbo boost. Go to control panel —power option—change to High performance— change plan setting—advanced setting —processor power management— change both 100% to 99% , click save.

④Update graphics driver:  Please uninstall the graphic driver in the device manager and install the new one.
Here is driver for SER7 7840: https://url.bee-link.cn/wPts
Here is tutorial: https://url.bee-link.cn/wEmk

⑤ Please test the RAM with Memtest and use Diskgenius to test if there are bad sectors for the SSD.

Best regards!
Yue
Customer Support 

Fragster
Did you ever resolve the problem? The same thing is happening to my SER8. What worked for you?
Thanks

Sorry to hear that. I’m in the same boat. The only thing that works for me too is a long press on the power button. If I come up with a solution I’ll give you a heads up.

Fragster
Fragster, I got my SER8 working again! Finally, it shuts down and stays off (for now at least). It used to come back on after 1 minute off.
Anyway, in BIOS I clicked on Restore Defaults and saved it.
There were a few problems at first: I had to enter my Bitlocker Key when I re-started windows (have this handy), I had sign in to my Microsoft Account to create a new PIN (I’m not using a local acct), and most importantly, I found that Secure Boot was disabled. I consider this very unsecure.
So, I went back into the BIOS and enabled Secure Boot (went to Custom, then Standard). Now it seems to work fine. Keeping fingers crossed…
Sorry if my instructions aren’t complete and clear. I’m just going by memory. Also, my BIOS may be a bit different than yours.
Good luck!
-Jack