Pre-installed? Like with loads of bloatware from the manufacturer?

Anyway, the major distros nowadays aren't Slackware. They work from the box, sans Nvidia (but unless you need CUDA that's just a reason not to go with Nvidia) and maybe Broadcom's WiFi (the firmware is in "non-free" repos because of licensing). An installation wouldn't take more than ten minutes, of which eight minutes is just watching the load bar. Then, of course, if you hate GNOME3 as much as I do it will take a bit more - but preinstalled wouldn't save you here either.