Hewlett Packard released the Business Inkjet 1100 in 2004. It featured a touch pad and easy configuration menus for ideal use in a small business setting. Occasionally it is necessary to reset it.
Using aftermarket, non-OEM (HP original) ink will often trigger the colour indicator and resume lights to blink, indicating a problem. HP programs the printer to read a chip on the cartridge and to recognise aftermarket inks because they do not warranty or recommend them. To reset this error, press the "Resume" and "Cancel" buttons at the same time until the warning lights shut off.
If you run an OEM cartridge out of ink and replace it with an aftermarket cartridge, the printer will not reset the low ink indicator. The only way to achieve this is replacing it with an HP cartridge.
Use the HP 45 black and the HP 41 colour cartridges to avoid ink errors and malfunctions. Cleaning print heads sometimes corrects a locked printer. Do this by holding the "Power" button down while pressing the "Cancel" button twice. Uninstall and reinstall the driver from the HP website or from the original disks to correct frequent hangs.