Do i have a bad ribbon cable or the actual screen is damaged?

[cincomeister]

Hello,
I have a problem with my MSI notebook display. I cannot figure out whether the problem caused by my screen cable or my gpu. The problem is that sometime when i boot up my laptop the screen does not show anything just black screen; however, the system is able to boot up properly. I can confirm this because when i plugged it to another monitor via mini-display port, everything work as usually except the screen on my laptop is black. This happens very frequent and when it does, and i happen to be at home i could use the extended monitor to login, shut my computer down, close the hinge down, wait a few minutes, press the power button and hopefully it does not go black again. OR i would guess typing my password while the screen is black and then Alt + F4 then Enter to try and shut down the laptop which is not fun.  Moreover, when it actually booted with a working screen when i try to bend the screen down ( like when you try to close the laptop) the screen would sometime goes distorted for a brief moment then work again. My assumption is the ribbon cable of my laptop screen is loosen or about to break or worse case scenario i have a bad gpu. I hope someone would help me pinpoint the problem and hopefully it is fixable.

[Necrocomputing]

if an external display works as you said you can safely conclude it's not your GPU.
I'm curious about what you mean by "Screen distorted", if you are sometimes getting a messy image from tilting your screen I'd assume it's the ribbon cable. Except for dead/stuck pixels or being cracked there isn't much that can go wrong with the LCD panel it's self.

What I would like you to try is shinning light on the black screen (when it's supposed to be lit) from various angle too see if you can make out an image. If you do it's your screen's inverter that is at fault, Might need a new inverter might just need a new power cable for it.

[cincomeister]

22 hours ago, Necrocomputing said:

if an external display works as you said you can safely conclude it's not your GPU.
I'm curious about what you mean by "Screen distorted", if you are sometimes getting a messy image from tilting your screen I'd assume it's the ribbon cable. Except for dead/stuck pixels or being cracked there isn't much that can go wrong with the LCD panel it's self.

What I would like you to try is shinning light on the black screen (when it's supposed to be lit) from various angle too see if you can make out an image. If you do it's your screen's inverter that is at fault, Might need a new inverter might just need a new power cable for it.

I'm quite sure that there's no dead/stuck pixels or cracked. By distortion i mean, the screen would show a brief horizontal lines and then when i tilted it a bit lower or back (like when your open your laptop), the screen start to work again like normal. Also, it is very frequent that that happens. I'll try that shinning the light on the screen technique next time the screen goes black when i boot.

[cincomeister]

Here's what i am talking about when i said it's "distort"

 

[Necrocomputing]

yeah that definitely looks like a ribbon cable issue to me. I'd actually go so far as to say it's probably just loose rather than damaged.
I wouldn't even bother with the light test anymore. Thought if you want to go ahead it can't hurt.

What's your laptop model ? depending on how it's assembled you might be able to tell by pushing down on the case in specific spots while the screen is "distorted" as you say.

[cincomeister]

It is a MSI GP62MVR 7RF Leopard Pro (GTX 1060). Also, the "distortion" only happens when i tilted the screen downward. It doesn't happen when the screen is in a fixed angle.

6 hours ago, Necrocomputing said:

What's your laptop model ? depending on how it's assembled you might be able to tell by pushing down on the case in specific spots while the screen is "distorted" as you say.