Asus Laptop won't turn on if connected to monitor

Jun 24, 2018
So a couple of days ago my Asus N56D laptop screen stopped working so I decided to open it to verify that all the connectors were in place and everything. I did so and when I closed it, it worked fine and the screen was not blank anymore! Yet, yesterday the laptop wouldn't start even if plugged. I opened it again and discover that it would turn on only if I unplug the monitor connector. It doesn't appear like the monitor connector is broken or like one of the pins is missing. I tried to clean the dust from the connector and laptop in general but nothing changed. I finally tried to change the RAMs to see if it did something but it did not change anything.
Summary: the laptop only turns on if it is not connected to its own monitor (keyboard lights turn on, processor and fan start working). If connected, it doesn't turn on at all (nothing happens that was said before happens)

Thank you for your time,
Then there is either a problem with the cable that connects it, the display itself, the GPU or the motherboard (possibly where the cable connects). You can either do the work yourself, testing them one at a time, or take it to a tech that can.
Thread starter Similar threads Forum Replies Date
N Laptop Tech Support 2
T Laptop Tech Support 2
J Laptop Tech Support 4
S Laptop Tech Support 2
5 Laptop Tech Support 13
N Laptop Tech Support 2
P Laptop Tech Support 1
J Laptop Tech Support 1
G Laptop Tech Support 2
C Laptop Tech Support 4
K Laptop Tech Support 2
D Laptop Tech Support 4
A Laptop Tech Support 5
R Laptop Tech Support 1
M Laptop Tech Support 4
M Laptop Tech Support 12
P Laptop Tech Support 4
B Laptop Tech Support 2
N Laptop Tech Support 1
C Laptop Tech Support 2
Similar threads
Question Connection to laptop monitor got cut off, everything should be working. But hmdl shows black screen.
Question How to wirelessly connect 2 laptops to an external monitor
How to connect newer USB-C laptop to older E-port dock (with no USB-C)
low frame rates on 1050ti laptop screen, but better when connected to monitor.
Laptop wont connect to monitor
How to connect two extra HDMI monitors to a HP Pavillion laptop on extended mode
I have an HDMI converter cable to use with HP monitor whilst connected on my Acer aspire laptop but ITs displaying for five m
Solved! Cannot connect laptop to external monitors
Solved! Connecting external monitor to broken laptop issue(video mode not supported)
Dell G7 freezes while gaming, the laptop is closed, connected to external monitor, but resumes once the lid is opened
Laptop with Broken Screen Won't Connect with an External Monitor
Broken laptop screen , can't connect to a 2nd monitor using hdmi or vga
Weird laptop connected to monitor issue.
Laptop Screen Not Displaying after connecting to External Monitor
(tried everything) Can't connect broken laptop screen to external monitor
Laptop won’t connect to monitor
Laptop not connecting to external monitor!!! PLZ HELP!!!!!
how can I use my laptop that's connected to a monitor, but use the monitor for something else? Like I want to do something on
My Laptop Screen is Black but its working when i connect to a differnt monitor
My laptop doesn't recognize peripheral devices connected to its external monitor.