System XP Pro attached to a new HP Officejet 6700 Premium AIO printer. The printer installed OK using a downloaded set of basic print drivers from HP. However, the next morning, the printer would not print (printer is on and connected via USB). Exchanged the printer cable for a different one, changed USB ports to no avail. Attached printer (again downloaded drivers from HP) to a newly generated XP Pro system on a laptop. Printer installed OK but the next morning, the printer would not print. However, tried printing again about 2 hours later in the morning and the printer prints OK. Does anyone have any ideas what could be causing this? HP has not been helpful with a resolution. It is a new printer, ordered from HP and we are considering returning it but am still thinking that something within XP is causing this.