Thanks bro very much. I checked it might be because the battery is 0% and locked. It's sad that laptops break down like this...

Thanks bro, wonderful my laptop is working. but the laptop still can't charge the battery. And the keyboard on the laptop is still slow. While I use a USB keyboard plugged in, it's fast.​...

After I updated the BIOS rom on dell.com, my laptop crashed (no LED or power signal when I turned on the power button). I suspected that there was an error during the update process, so I tried downloading some E7280 BIOS roms on the internet and updated them via the CH341A reader/writer. Now the machine can boot but shows the error: "TPM device is not detected."
I hope you can help me fix this problem. If possible please help me with the latest BIOS rom.

Service Tag: G0MKNH2
Chip: 25Q128JVSQ​

Many thanks
​...

Vẫn bị báo lỗi như vậy bro ơi. Có cách nào khác không mình tải upgrade bios trên trang chủ lúc up bị lỗi máy tắt.
ROM gốc mình quên ko lưu.
Tình trạng máy lúc đầu thì bàn phím nhận chậm, pin cắm ko báo sạc pin...

thanks for support...

Hi everyone,
Please helpme original bios file. I tried to update 1 bios attached on this post but it reported error: TPM not detected. and then i checked and found the Service Tag does not match.​
This my laptop Dell E7280
Service Tag: G0MKNH2
Chip: 25Q128JVSQ

Thanks for support
Many many thanks