An Alienware M17x R4 Laptop
Upgraded with
970m 6GB
16GB RAM
and a couple of extra drives
Okay try this:
Press [Fn]+[F7] or [Fn]+[F5] to switch from integrated graphics mode to discrete graphics mode. Restart the computer when requested.
[edit] I'm pretty sure it's a bios issue but if that doesn't work, go here for more info -
http://www.dell.com/support/article/us/en/19/SLN85593/EN