I have purchased refurbished PCs from Amazon in the past as my needs aren't dramatic.  The original unit arrived with one issue that resulted in the PC to boot up on its own as soon as the power cord was attached, which it should not do.  A few days later it wouldn't 'wake up' when using the mouse or keyboard.  The only way to get it to respond (wake up) was to press and hold the power button to restart the PC.Called tech support and they agreed to replace the PC, so once I dropped it off at UPS with the prepaid labels they shipped the replacement unit right away.  That's good service for when things go wrong, it happens.So far so good.