I'm using this keyboard without the software and setting the LED pattern using Fn + left arrow.  However, after a period of time it resets back to the rainbow pattern.  Without using external software, how can I force the keyboard to stay as a solid color?

It's a work laptop so nearly impossible to install software.  However, I can try the software on one of my computers and see if that helps.

bobmitch
Why not install the software...set the keyboard the way you like...(make sure to apply settings, which will save to the memory on the board) and then uninstall?  My Unleash RGB is set NOT to run on Windows startup.
I have 5 profiles set up for assorted reasons...all loaded into the memory.  I can uninstall Unleash RGB and the keyboard settings are now in the keyboard and all five profiles work.  I have different colors for each profile...

WHAT??? my Z15 does not remember anything I set at all if the software is not constantly running in the background... NOTHING is saved to the keyboard (and that is one of my major complaints about this keyboard)... am I mistaken? or my device is defective? As soon as the software is not running it goes back to rainbow or whatever the default on that profile is... 
 
Edit: My X17 mouse is also behaving like this... all the DPI settings are lost as soon as the software is not running... Forget the RGB settings on that...  If there is a fix for that, then I'll really become a huge fan of Z15 and the X17... because this is a major source of headache and heartache for me... 

EVGA_James
 
 
Only thing that can not be saved to the keyboard is any custom lighting. 

Oh darn... that is my use-case for the RBG lighting... to color-code application and game key bindings and shortcuts... -.-" thanks for clarifying that... I guess I'll switch back to my other keyboards for that... Maybe I'll gift this keyboard... 
Are the DPI level settings saved in the mouse? That one is really annoying... I don't care about RGB in the mouse since it has no utility for me... 
Are there documentation on what settings are stored in the devices and what cannot be stored somewhere? 

EVGA_James
everything else can be saved to the devices except custom lighting. 
For custom lighting Unleash needs to be running in the background. 

I just verified this for the X17 mouse... definitely the DPI settings are not saved to the mouse... I know that because the default high DPI is something like 16k DPI or something crazy high that I cannot actually control. I set the highest DPI to be at 4500dpi for the size of my single monitor, yet as soon as I quit the application the mouse cursor starts darting across the screen really fast... so it looks like DPI profiles are not saved in the X17 either. 

gameoffuture
OK I think I figured what was wrong... In the software I was setting the settings for Profile number 1, yet when the software closed the mouse switched to another profile. I can't tell from the LED's what profile number it was on, because I'm not sure if it is counting from top to bottom, or bottom to top... anyways, hit the profile button on the mouse till it got to one that I can control, that seems to be the settings I had set in the software... wow... I have been suffering from this since I got this... Thank you for your help. 
 

It’s something you can color code all the profiles so you know which one you are on. Or you could set them then hit default after seeing which way the profiles rotate. Another idea would be set a profile for rainbow clockwise, counter clockwise, right to left, left to right and the other for the profile you want to be your gaming one. That way you can tell which profile is which.

i've had the same issue with mine just make sure you are on the right profile

gameoffuture
Thank you for the suggestion. This was issue on the X17 mouse. As long as it stays on this profile so I could use it cross my computers I'm a happy camper... :) Maybe I'll change all the profiles to the way I like and it becomes a non-issue :D I really need to thank you, having solved this makes me really happy and saves me a lot of heartaches. I was really close to give up on the X17 and go back to my old Logitech G500.

I figure that out too, as long as I don't run the software again after I set up my custom profile on my Z15 keyboard it won't mess it up back to default after I close the software

if I want to change the custom profile I have to set the keyboard back to default then make my new custom profile