Summary: I am not a tech person however I purchased this unit August of 2013 and it "crashed" on January 2014. Up to January the unit was working fine. Then in January it started to take longer and longer to boot up. I thought it might be a virus or some such however I was using a security suite along with MALEWAREBYTES and SuperAntiSpyware. Before the unit completely quite I received a blue screen with the message "this computer needs repairing.