It sounds hardware related however we would want to be sure.
Try downloading Ubuntu onto a USB drive and booting off it in the Demo mode. If the issue persists it's an issue with the Hardware.
Please post back the results.
I just downloaded an ubuntu .iso file onto a USB. Just plug it in and start my laptop?
Not quite the simple. You need to mount it onto the USB.
I use a tool called Rufus. A quick google should find it.