I tried using a DVD to install ubuntu 15.10 64bit but it stopped / hanged after I chose install ubuntu (instead of try ubuntu). The pc has a CPU that supports 64bit and 4 gb ram. I tried install it through a bootable usb key, but it stopped at the first shown menu of choices after I chose install ubuntu. I tried many times. Same problem. What could be the reason? Should I try 32bit older ubuntu? Thanks for help.
SnapOverflow
I finally installed it. What I had to do is: click stop installation (forget what it is exactly called), and installation took me to a try ubuntu environment. Played a little bit there with firefox and then I clicked install ubuntu from desktop. This time it was successful. It is very strange, but it fixed the problem, hope it hopes you. Thanks.