HP 830 G5 weird artifacts

[estabilito]

I have 830 g5 whic after installing all drivers and updates from windows update - laptop screen turns black with top weird artifacts(photo attached). After that laptop dropped in bootloop and after while and next 24hours working properly without any problems - memtest passed, what can caused this?

[mon2]

Re: HP 830 G5 weird artifacts

Looks to be a defective LCD panel.

Memtest will only test the memory on the logic board. The LCD is a standalone component which the logic board is unable to test but can communicate with using MIPI, LVDS, eDP, etc. interface pins. In the end, the logic board will spit out data (after configuration) and the LCD panel must do its job to display the sent bitmaps.

[estabilito]

Re: HP 830 G5 weird artifacts

Yea, i know this but i had similar issues with deffective ram thats why i did memtest. Hmmm, now nothing happening with this laptop and honestly i dont know what to do - i can only add that after this artifacts, on next boot system was repairig, is it possible to deffective driver can act like this?

[mon2]

Re: HP 830 G5 weird artifacts

Does the laptop work normally with an external monitor?

[estabilito]

Re: HP 830 G5 weird artifacts

it work normally even on built in display, this was just one situation - now, while testing in 12-13 hours works without any problem. trying to bent lcd cable or laptop screen wing nothing happening.

[mon2]

Re: HP 830 G5 weird artifacts

Issue could be a defective interface cable between the LCD panel and the logic board or mating connectors. The LCDs are not flexible so avoid from bending them else the display will be permanently damaged.

Inspect the connectors and look for possible liquid damage / corrosion.