You can not make this stuff up.  Buyer beware.  The computer boots up and runs.  I purchased this computer to use SKYPE the back speaker and mic ports do not work the front mic port does not work only the front speaker.  When  Skytech USA LLC  tech support.  They tell me that on a refurbished unit the mic and speaker are not required to work but it is most likely a driver problem and YOU would have to fix it.  I said I am on the phone with Tech support I have a one year warranty card that came with the computer.  Sorry sir there is nothing can do.  I asked for their address to write a letter they would not provide it.  It is only a 150. dollar computer but there was nothing in the Amazon website say the on refurbished units the mic and speaker may or may not workTHEY ARE AN EVIL COMPANY DO NOT BUY FROM THEM.