charger very, very hot

A Surface power supply can feel warm during normal use, but it should not be so hot that it cannot be held for more than a second or two. Combined with the fact that the device is under warranty, this should be treated as a potential safety and hardware issue rather than normal behavior.

Take these steps:

1. Stop using the charger immediately
   • Unplug the power supply from both the wall outlet and the Surface Laptop 7.
   • Let the charger cool down completely in a safe, non-flammable area.
2. Inspect for visible damage or heat signs
   • Check the power brick, cables, and connectors for:
     • Burned or melted plastic
     • Discoloration, charring, or deformation
     • Any signs of swelling or heat damage
   • If any such signs are present, do not plug it back in.
3. Use only genuine Surface power supplies
   • Ensure the charger is a genuine Microsoft or Microsoft-licensed Surface power supply designed for the device. Using non-genuine or incorrect power supplies can cause overheating and damage.
4. Try a different outlet and remove accessories (optional, only if no damage is visible)
   • If there is no visible damage and the charger has cooled, plug it into a different wall outlet and charge the Surface without any high‑power accessories attached.
   • If it again becomes extremely hot, stop using it and proceed to service.
5. Start a service order for the power supply (and device if needed)
   • Since the Surface Laptop 7 is under warranty and the charger is overheating, submit a service order:
     1. Go to Microsoft account | Select device for service and sign in.
     2. Select the Surface Laptop 7, choose the issue related to power/charging, and follow the steps to request service or a replacement power supply.
   • If the charger shows any melting or heat damage, or if there are concerns about safety, this should be reported as a potential safety issue. Be prepared to provide:
     • Model and serial number of the Surface and power supply
     • Description of the overheating
     • Clear photos of any visible damage
6. If the device itself feels too warm
   • If the Surface Laptop 7 itself feels excessively hot or shows a thermometer icon, turn it off, move it to a cooler place, and let it cool for at least five minutes. If the issue persists, contact support.

Do not continue using a charger that becomes too hot to touch, as this may pose a safety risk and can damage the device or battery.

References:

• What to do if your Surface power supply or charger doesn’t work
• Surface battery won’t charge or Surface won’t run on battery
• What to try if your Surface feels too warm
• Repair Safety Guidelines
• Caring for your battery in Windows
• power supply - Microsoft Q&A
• My battery expanded in my Notebook and popped open the cover. This is not good - Microsoft Q&A
• Filing a warranty claim for a Surface Laptop 4 - Microsoft Q&A