I recently replaced my old 11 year old scanner, copier, printer with a new one, a HP PSC 1510 and installed it. 50% of the time I try to scan something it tells me the scanner is NOT connected... I can scan 10 things and out of the 10, it will tell me at leat one time my scanner isn't connected. I just keep trying and it will scan.. HP was NO help at all when I called them.