printers dont have moving memory drives, the only software that runs is firmware that handles data transfer and the operation of the printer itself, some have quite large buffers using chip based memory ( 32GB, 64GB etc) for printing in progress (like large format A0 size poster printers- the big giant ones) the internal software (firmware) is stored in a non-volatile type memory (this means that it is locked in place, even if the power is cut off) and most are EEPROM (electronically erasable programmable read only memory) as opposed to ROM (Read only memory-which is a type that is loaded up in the factory and stuck in there permanently).....the EEPROM type is over-writeable and can be copied over with new data (loaded up with new software) this is so that the firmware (internal operating software) can be changed and updated if the manufacturer brings out a new version (to fix up problems etc) I very much doubt that this has been wiped, even if it has it can be reloaded by re-installing the printer cd-rom/dvd disk on the PC...which will send it into the printer memory card...the prints in progress should have been finished by the customer or cancelled off, if they were lost due to the printer being switched off then they never set up the print spooling (storage of prints in progress) on their computer correctly......if the printer was a networked printer, then the network address may need reset, this is easily done from the printer menu to get it re-connected to the users computers by making it appear on the network again, you will probably find that there will be a huge pile of prints come out when this is done.....otherwise as mentioned, a previously broken item may have been wheeled out in a blame attempt.... all prints should be either still "inside" the sending computer or a "print server" which will resend them and they will print out......let me know the printer model (or just how big it was and what colour it was) and I will try to get you the re-set instructions....