Attention light will not stop blinking on HP Laserjet 1320. Cannot get installation software to install printer to run diagnostics on PC or through HP online troubleshooter. Checked all paper paths, cannot see any jams or paper scraps. Have reload the cartridge many times. Tried to cold reset, worked once but went back to blinking after turning off then on. It will not print configuration page, demo, etc. Does not have a memory DIMM installed I have follwed HP's online nstructions with no luck. Is this printer toast? Can it be the printer cartridge?