My laptop's screen flickers or turns black randomly

[jmarket]

I’ve posted this before, but I can’t find a fix for this. I have this problem for months without finding a permanent solution. My screen either flickers or turns black and won’t turn on even after rebooting, I just keep turning the laptop on and off until I finally get the display to work. The laptop seems to work fine when I connect it to an external monitor (I’m not sure if there won’t be a jitter on the external display too since I don’t use it for long). Based on what I found the problem could be related to the LCD display itself, the cable connecting to the motherboard, the CMOS battery (I don’t understand why, it’s just what I found), or faulty display drivers.
I tried to uninstall the INTEL and NVIDIA drivers using DDU uninstaller, then either installing them using one of the following:
-windows update: the problem is not solved, it’s even worse than before.
-Directly from INTEL and NVIDIA websites : this seem to fix the black screen problem, or at least before I try another solution, but the screen jitter it’s still there.
-Using Lenovo vantage : I think it’s about the same result above.
The flickering is almost unnoticed, it happens once in 1-2 hours, sometimes once a day, and it only happens for a half second.
Based on what I’ve done, could I be sure that it’s not related to the hardware itself and it’s just software issue?
PS: I have LENOVO yoga s740 with NVIDIA mx250

[phillpower2]

I’ve posted this before, but I can’t find a fix for this.

And you were offered help but did not even bother to acknowledge it, you may get lucky by someone replying and if they do I hope that you reply accordingly.

[jmarket]

I apologise for that, I just wasn’t availabe for a while I tried to answer after but the thread was closed.

[Bruce]

in your original thread, did you get around to checking the backlight by shining a torch onto the screen as suggested in post #2 of that thread?

how old is the laptop?

maybe time to back it all up, and reload a fresh install of Windows?
that should highlight if it’s a hardware or software issue.

[Bruce]

@amine2201 - any news?

[Bruce]

abandoned.