Hello Florian,
Thank you for posting in Microsoft Community.
I am aware that you're experiencing issues with charging your Surface Laptop Studio. Based on the information you provided, it seems like there might be an issue with the Surface Connect port on your device. I value the time you have spent in trying to troubleshoot this problem. I am here to help and let us both isolate the issue.
Here are a few troubleshooting steps you can try:
- Check the Surface Connect port for any debris or damage. If you see any debris, gently clean it out with a soft-bristled brush or a can of compressed air.
- Try using a different Surface Connect charger to see if the issue persists. If you don't have another charger, you can try borrowing one from a friend or family member.
If the issue still persists, when using another Surface PSU, the problem might be with the charging port itself that malfunctioned.
You may also try the suggestions provided from these articles:
- Surface battery won’t charge or Surface won’t run on battery - Microsoft Support
- What to do if your Surface power supply or charger doesn’t work - Microsoft Support
Let me know how it goes.
Kind regards,
Lavenia