Apple MacBook PC Notebook "disk won 39 spin dvd" Questions

...won't accept CD's/DVD's in Disk Drive My Mac that I've had for almost a year refuses to take any disks into the drive. I think it may be related to strange sounds coming from the drive everytime I ...

...won't get past the blue screen at all.. I don't know anything about rebooting are system disk that noone seems to have for macs. I NEED HEELLPP!!! pleas... I would try starting the machine up ...