I bought this a back-up computer for my work machine.  I have used this computer for a total of 3 hours since I purchased in November.  I have loaded virtually zero software on this device.  McAffee and Quicken and Microsoft office.  That's it!!  Now it has to be shipped back to Lenovo!!  They folks tell me the motherboard or the controller has gone bad.Do NOT Buy this machine!!!This is the second consecutive Lenovo product that I have had problems with.  Up until recently I thought they were good machines.  They are now awful.I would also think that this supplier would be in question.I repeat....DO NOT BUY this machine.  DO NOT ORDER from this supplier.  Amazon should drop this company.I hope someone contacts me but I do not hold out any hope.  EXTEMELY DISSATIFIED CUSTOMER.