arduino diecimila code 43

hello guys

my arduino was working fine it has pl203 prolific usb converter, so drivers were installed

it was working fine until now when i plug it in it says device not recognized and it lists it as code 43

i have not done any changes to the drivers or the system.... please help as i have a project coming up in 3 days :frowning:

i have tried different cable and on different pc its not working :frowning: