Help

after overclocking my 40x12 5w to the 48x burner all was fine for about 4-5 weeks now all of a sudden it wont burn i upgraded the firmware form liteon and it burned 1 cd ok then tried to burn another and it wont have none of it its only 3 months old so dont really wanna have to bin it just yet lol
also it wont read any cd do i take it out smash it with a 14lb sledgehammer or does anybody know how to sort it ??
windows finds it as a burner so what the fook is wrong

thanx in advance peeps