Hello,
I just got the 15R last week. Initially everything was working fine with the display and the touchscreen but after a few days the screen began acting up and blacking out. You can tell that the backlight is still on but the display itself is totally blank. At first it would just flicker and come back, I think it was related to the position of the display as moving it around sometimes helped. I figured this indicated a problem with wiring but I went ahead and updated the display drivers through Dell support but to no avail.
A few days later and now the screen stays totally black (backlight still functions). It does not work on boot and, since the laptop only has HDMI out I cannot get into the BIOS or pull up the boot menu. Once Windows loads I can plug it into a TV and get a picture through HDMI. Through this means I've updated the BIOS to the latest version.
The only thing that gets some life out of the display is the diagnostic of pressing "D" upon power-on. The display then cycles through different colors all of which appear fine but as soon as the diagnostic ends they screen goes black and stays that way (still with visible backlighting).
It definitely seems like there is some shoddy wiring somewhere leading to the display but I'm hoping there might be a step that I'm missing before going through anything that makes me wait days on end to get a working laptop again.
Thanks for any help or suggestions anyone can provide.