Bought a new HP P.C for navigation use only on a tugboat first one had to go back to Circuit city after 3 days, it kept shutting down. It turned out that it was a re-pack, taken off the back shelf they gave us another that also turned out to be a re-pack. This unit wasn't right either but worked half way usable, and we needed it now for our navigation on Chesapeake Bay. then it's power supply ( Blew out ) actual sparks coming from the back ! We took it back and and they put a new power supply in, it was in the shop from 09/25/08 to... read full review »