If the external monitor is working properly, there may be something wrong with the laptop’s display panel.
Hard Drive If you still can’t get rid of the DVD, you can try another wireless card. Modem Remove the keyboard and restart the laptop. Also, nothing is appearing on the external monitor. Finally, disassemble the laptop and disassemble the motherboard.
In the picture above, the video card is integrated into the motherboard. The CPU has a heatsink and a cooling fan. The memory module is also good. The DC Power Adapter also works well. The CPU Cooling Fan only starts when the power is turned on. If nothing appears on the monitor (95%) it is likely that the motherboard is bad.