The computer I received had memory problems and restart problem, which  SKYTECH USA LLC support repeatedly tried to help me solve.  When I finally gave up and I told them I wanted to return the computer, they were very nice, and set up a hassle free return process, and cross shipped a replacement computer, which I probably received before they received my return.  The new computer worked fine.  Skytech is a great company that stands behind what they sell, and I will buy from them again.