Ubuntu hangs on boot on Asus U46E

Recently, I installed Ubuntu on my Asus laptop, but it keeps hanging on the start up screen. It seems like Asus laptop has a problem with this. After reading several options, this one works for me:

1. Go into your BIOS
2. Select "Advance" using the right arrow button
3. Select "VT-d" by pressing the down arrow button
4. Press "Enter"
5. Select "Disable"
6. Press "F10" to exit the screen
7. Select "Yes" to save

Note: You can read on VT-d on Intel blog to see if that's the best option for you.

If that doesn't work, you may find these solutions helpful:

1. Ubuntu 10.10 [64 Bit] hang on boot 
2. Ubuntu 12.10 boot hangs on purple screen 
3. Ubuntu hangs at purple screen