thankyou for your reply
yes i have repeated the same mistakes which is very stupid on my part. i still download music through limewire (file sharing program) and did recently download some codecs.
i have used system restore to take it back to the day that i reinstalled windows but unfortunatly this did not solve the problem.
it was a complete format, i got rid of all partitions and there were no old files at all, i completely cleaned the whole drive.
the media player i am using is the newest one number 11.
i have windows defender, norton and have done an online scan using trend micros house call, which i beleive is quite good , i apparently have a clean system.
The driver on the manufacturer's website is the same driver that came with the pc but i'm quite confident its not the driver as it worked fine untill yesterday and i have not changed the driver since re-installing windows.
unfortunatly if i do need to format and re-install windows again it will be a very lengthy process as i have a broken cd drive (thanks to the missus falling on it while it was open) i had to borrow a mates cd drive to re-install windows the time before and he is away on holiday for the next 2 weeks and as a university student i have very limited money and cant afford to buy a new one for a while.
once again thankyou for any help