Hey everyone, I'm having a very strange problem that I cannot seem to fix. I've tried a lot of troubleshooting steps and none of them have seemed to work, so here we go.
It is a Dell Inspiron 14z 5423. The customer originally dropped the laptop and it cracked the screen and ruined the hard drive. I replaced the screen and the hard drive with an SSD, and I just did a Windows 8.1 (64-bit) reload a few days ago. Downloaded all the drivers directly from Dell and installed everything with no problem.
The problem that is happening is a weird brightness or flickering of the screen but only when it is booted into Windows or on battery power. If it is plugged into the AC adapter, the screen looks perfect with no issues. I can also have it on battery power in the BIOS or the Dell diagnostics with no flickering issues. It only occurs inside of Windows and on battery power, which led me to believe it is a driver or power management setting issue.
I have tested it with three different screens and it happens on all of them, so the screen is not the issue. I have tried all sorts of uninstalling and reinstalling of the graphics driver to no avail. Messed with Intel power management settings, sleep and hibernation settings, brightness settings, pretty much everything I could think of. To be clear, everything is up-to-date on this laptop. All Windows updates, the latest BIOS, and drivers.
I am open to any and all suggestions. My next troubleshooting step would be to order and install a brand new battery to rule that out as well, but someone out there must have experienced this before or have some ideas for fixes to try. The customer is wanting to get it back quickly, and I've already been fighting this issue for a few days.
Here's a link to the video of the issue:
https://vid.me/826n
Any and all help is greatly appreciated, and thanks in advance.