When I first powered this up a few days ago the computer display did not work.I tried multiple types of displays but nothing worked. The computer powered up but no video output.Then for some unknown reason it came to life.I spent 2 days emptying my old files and transferring files to this one.It only has 2 USP ports on the back so I purchased a couple of hubs.I also purchased a new monitor because my old one was  VGA type.After many hours of getting things organized and tidying up the mini computer worked great for my first evening of installing programs etc.Today when I tried to turn it on it would not power upI checked that there is 12 volts out of the power adapter.Very dissatisfied.