I am actually issuing extacly the same problem as described in the following link:
Unforutnatelly there seems to be no solution so far and so I am opening a new discussion, hoping to fix this problem.
Regarding the replie of Dell-SreejithR in the link:
-> I don't face a flickering or black screen if I move the screen back and forth
-> The problem appears out of the dark. But I determined that it always happens when my charger is plugged in for a while and if I am working on it (average utilization)
-> It usually starts with a flickering screen which gets worse over the time until the screen finally goes black (with balcklight still on!)
-> The flickering can also turn into black and white bars all over the screen. (see also attachment)
-> A connected external monitor (HDMI) is not effected at that time
-> The problem can be solved by:
Interpreting these hotfix solutions, there is a single constant in the procedures -> Turning the screen completly off and on!
-> All drivers and bios sw is up to date
-> The problem consits for about 4 months, now
-> I also determined that manually rebooting driver by pressing [shift]+[strg]+[win]+b does not solve the problem as this does not turn off the screen
Hope there is somebody out there with a solution for this.
Welcome to the Dell Community @C0n57an71n
Dell-SreejithR did not explain what a proper "Flex Test" is???
While the laptop is booted and the screen is on.
Grab the display at the upper left and right corners.
Then push one side forward and the other side backwards about 1/2" to 1"
Repeat back and forth. "Flex Test"
Since all drivers are up to date.
It is not duplicated on external display.
The flickering turns into black and white bars.
Sounds like its time to replace the "Display Panel"
Enter your "Service Tag" and search for your configuration.
There you can find the part number for your display.
Thanks for your reply!
Doing a proper "Flex Test" as you described does not bring up the problem, luckily.
Don't you think that there can still be the possiblity of an sw related problem as a simple "turn off an on of the screen" heals the problem for a longer time?
Or maybe it is a grounding problem at the connector to the motherboard?
As the issue only appears about once in a week at a daily use of the notebook. I can currently live with my "hotfixes". If it's getting worse I will have my LCD replaced and give feedack at that time.
Since the "Flex Test" passed that reduces the chance of it being a loose cable connection or a cold solder joint on the display.
If a display produces "Bars" the first thing my Techs do is replace the display.
Most if not all of the time that fixes the problem.
Continue to monitor the display and post back if it continues or escalates.
Best of luck,