hi guys

i have toshiba laptop s55t-b its working on the old io chip but when i install new io chip the caps lock and num lock keys lights on with green lamps but with black screen i know npce 985 unprogramaple chip is it true or iam wrong with that is it programable?

As far,as I know npce 985 is really unprogramable chip,and there is nothinng to flash in it.Try with other new good one

thanks yes i know that too but when i replace the old one with new and didnt work now i found that the bios was the problem thanks again