try to re-program this, flash this from a real dos mode, not from a dos window, using a flash you can find for your model at sony's webpage. if that didn't work then you must send it for re-pair. Ofcource I assume you use windows 98, or 98SE as O.S. Make it clear to you. cdr-w have a chip like bios on motherboard. there they store usefull things about their operation, like the speed , read and write operation, and in general all things cdr-w need to work. if you try to re-program that memory with another program not came from company that made the device, then in most of cases you make device unusable. So, turn off your puter, let it stay off about 3 or for minutes, use a diskette to begin your putter, load cdr-w drivers for dos, and in another diskette have the flash program you found on sony's webpage for your model, CRX 140E. Then using that diskette try to flash your cdr-w again. if won't work, then you must send your device to Sony for repair, change the EEPROM chip. hope that helped you. good luck .