This is a guide on how to get an Asus Zenbook laptop with a 13.3″ 3400 x 1600 QHD screen to… display the color yellow. This is something a laptop screen should probably be able to do straight out of the box, but there are dozens of posts online asking why yellow displays as a dark mustard color and how to fix it. I’d read about an unofficial BIOS flash before I bought my UX303LN, but it didn’t do as much for the problem as I’d hoped. So I experimented further with a bunch of software and found a set of steps that gave me a good result that I haven’t seen described elsewhere.
The steps below worked on a QHD Asus Zenbook UX303LN running Windows 10. My understanding is that this mustard problem still affects the newer UX303LB and UX303UB models. In theory I guess this guide would fix the problem on those laptops too…
- Install the latest nVidia GeForce drivers for your 840M or 940M.
- Uninstall “ASUS Splendid Video Enhancement Technology”, if it’s installed.
Two: BIOS Flash
Warning One: This step is for UX303LN and UX303LB models only, this doesn’t work on UX303UB or newer laptops. UX303UB users should skip this BIOS flash step and proceed to step three.
Warning Two: This involves running a program that changes your system BIOS. I’ll provide a download link but I didn’t create the program and accept no responsibility if you decide to use it and it damages your system irreparably. If your computer goes to sleep or powers down while this is running you will almost certainly brick your laptop. So…
- Fully charge the laptop.
- Keep it plugged in.
- Edit the “Power Options” in your Windows control panel so the computer doesn’t sleep. Change everything to “Never”, as in this picture…
- Download the BIOS Flash Program.
- You’ll probably need to right click anxIntelEEpromUpdate-eDP-2.3.exe, click “Properties” and then “Unblock” this program.
- Right click the anxIntelEEpromUpdate-eDP-2.3.exe program and “Run As Administrator”.
- Use the […] button to select your YW_setting.bin file.
- Tick the “Verify” option, click “Start” and wait for the program to do it’s thing (about 15 minutes).
- Once it’s done shut down the laptop completely and turn it back on.
This should improve the colors but the yellow probably still looks too grey-green. Here’s a further enhancement…
Three: Intel HD Contrast
Download the latest drivers for the Intel HD graphics. One of these three…
The first thing you’ll notice is that this makes the screen dimmer, and you think it’s a setting you’re not going to want to keep. The antidote to this is to increase the screen brightness. But… if you use the Intel HD Graphics Control Panel to increase the brightness its software driver changes the color curve so that you end up with a smaller range of colors being output. Instead…
- I recommend increasing the screen brightness using the [Fn] and [F6] keys. This sends more power to the screen to make it brighter.
Four: Refresh Rate Nudge
If you have the same experience as me, setting this contrast just improved the yellow but when you unplug the power the screen somehow readjusts itself back again. (Watch the palette in MS Paint in the three seconds after you unplug). After a while I discovered one weird trick to make it permanent…
- With the contrast set to 40, right click the desktop, choose “Display Settings”, “Advanced display settings”, “Display adapter properties”, then “Monitor”.
- Change the Screen refresh rate to 48Hz, click “Apply”, then change it back to 60Hz and click “OK”.
Now this sticks even when I restart the laptop. There’s definitely something strange with the configuration of these screens. This is a lot of hoops to jump through to achieve something that should definitely be a standard feature of any screen. It took me some time and experimentation to find this solution but I’ve had some kind of yellow ever since.