Question Laptop internal screen blank but external works fine

Jul 29, 2022
I'm kinda struggling here with my screen not working. I recently had to change my chassis because of a broken hinge. The internal screen was held on pull tabs and both of them snapped (of course).
I had to pry the screen using force. After doing that the screen was black so I assumed I broke the screen in process. Then I bought a new one and to my surprise it also doesn't work...
External monitor works fine via HDMI but the internal doesn't even show the Lenovo splash screen when booting, BIOS also shows black. The internal screen is recognised in windows and Intel control centre.
Then I plugged the screen into another Lenovo laptop. There it worked fine. I went ahead and tried swapping the screen cable from the second laptop - Still nothing. The screen from the second laptop behaves the same.
The MB connector looks fine. The screen is the right P/N (strangely the second laptop has a different screen and it works there)

I tried:
DDU and drivers update
Safe mode
Tricking the lid Hall sensor with a magnet (Windows just makes an animation of changing the displays but still no picture on the internal)
Shining a light into the screen to see if there is a picture without a backlight - nothing to be seen

I've ran out of ideas here. If there is anything that comes to your mind (except changing the motherboard) please tell me.

Thank you
Thread starter Similar threads Forum Replies Date
A Laptop Tech Support 0
I Laptop Tech Support 1
S Laptop Tech Support 3
N Laptop Tech Support 4
BlaM666 Laptop Tech Support 1
Jph5674 Laptop Tech Support 4
V Laptop Tech Support 1
K Laptop Tech Support 14
Haruki-Man Laptop Tech Support 5
R Laptop Tech Support 5
Radishfarmer Laptop Tech Support 1
V Laptop Tech Support 1
S Laptop Tech Support 2
T Laptop Tech Support 1
M Laptop Tech Support 1
G Laptop Tech Support 6
V Laptop Tech Support 1
S Laptop Tech Support 2
D Laptop Tech Support 1
A Laptop Tech Support 2
Similar threads
Discussion Asus TUF GAMING A17 Laptop Display not working shows image on screen with flash light (malfunctioned during a standard internal cleaning)
Question Internal speakers do not work after playing a game + laptop shutting off
Solved! How to turn on laptop with the internal keyboard unplugged
Solved! My laptop turns off when internal HDD is attached
Question Laptop Using Internal Mic Instead of Headset
Solved! My HP omen laptop wont use dedicated graphics for internal display
Solved! external-internal speakers in laptop
Solved! internal laptop mic disabled when i plug in headphones
Solved! Internal right laptop speaker doesn't work but....
Question Laptop not displaying to internal monitor
Solved! laptop stuck on internal speaker output
Solved! Which internal hard disk is best for sony Vaio laptop Model No:SVF14212SNW IN5,54576340 and han code:84713010
Solved! Laptop kills 2 internal coolers
Solved! Is a laptop able to use a graphics card that is hooked up, externally? Even though it has one internally?
Manually change video output of laptop motherboard without internal display
Connect old Thinkpad laptop (with internal dial up modem) to internet
hp internal camera does not appear on my laptop screen. how to fix this problem.
internal broken laptop screen
I've salvaged a Fujitsu MHT2060AH parallel ATA internal hard drive from a Dell XPS laptop. The screen had fried but everything
I have a older Toshiba A45 laptop, I replaced the internal battery. Now all I have is a gray screen that says that I need to r