Question: I burnt a dvd from windows installation of 16.04 lts 64 bit. During boot, I disabled fastboot, secure boot and Intel speed step. I chose install ubuntu option, after about couple of minutes installation seems to hang, as progress animation stops. Any ideas? Just bought this laptop yesterday, I am totally stuck now. Any help appreciated. Thanks.

Answer: 
There are few variations of N5110.

If you have one with Intel Graphic + Nvidia card, then Nvidia is heating up your laptop.
Solution is to install Nvidia drivers which are offered in "Additional Drivers". I am using "version 367.57 from nvidia-367".
Once installed open up "NVIDIA X server settings" application; go to "PRIME profiles" and select "Intel (Power saving mode)". Click "Quit", then Logout and Login again or just reboot. Laptop should run silently after that.

If you have one with radeon graphic card, then instructions above does not apply.
Try i8kutils 1.43 from <https://launchpad.net/i8kutils>

The kernel module in use is dell-smm-hwmon; i8k kernel module does not exist anymore in recent kernels.