Hi, I have the D54250WYK with Windows 8.1 and after leaving it on at the desktop doing nothing for a while, I'll get a low memory error.
My setup is:
Memory is Crucial Ballistix Sport 16GB BLS2K8G3N169ES4.
Clean install with Windows 8. Upgraded to Windows 8.1.
Latest BIOS and Intel drivers installed. All Windows Update installed.
Enabled "Let me choose one scaling level for all my displays."
Disabled Sleep.
Restarted computer. Left on desktop and do nothing overnight. In morning, turn on monitor and there's a low memory error on screen. Task manager shows more than 14GB of ram free. I can reproduce this consistently. Reinstalling windows did not fix the issue.
I am not running any full screen applications or games (simply left on the desktop with no applications running) so I'm not sure if it's the same issue others are having.