Windows doesn't have kernel-mode GUI. To the extent that task manager (and the ctrl-alt-del screen) is prioritized it's prioritized in user mode. And it's far f

Windows doesn't have kernel-mode GUI. To the extent that task manager (and the ctrl-alt-del screen) is prioritized it's prioritized in user mode. And it's far from reliable in my experience: if the rest of the system is bogging down then task manager also tends to suffer, and I don't think I've ever seen it work in an OOM situation. Windows does have an early-oom like solution where it pops up a warning if you are getting close to running out of memory with an option to kill the highest-memory application, and it will also automatically expand swap if you have allowed it to do so great option if you don't like free disk space, but if both those fail it will crash hard