My client has a Dell XPS 8500 that has been in service since November 2012. Recently, it hung (froze) in the BIOS. Hard booting it (holding the power button until it goes off) has resulted in the same condition when the computer is started. There are no recent hardware or software changes. I would like to know what should be done to resolve the problem and would also like to know if this is a probable hardware issue (motherboard)? All suggestions will be appreciated.