If your Dell PC is stuck on pre boot system performance check, perform a hard reset, check for a faulty hardware, or disable ...

Next, a custom PCB was made with two Dell DC jacks and an MSP430. This passes power through the board, but uses the MSP430 to send fake data to the computer. The demo shows off a 90 W adapter ...

Check the power adapter Open the battery compartment and clean it Update the Batteries-related drivers on your laptop Run Power Troubleshooter Run the Power Efficiency Diagnostic Report Tool.