Breen

On the boot menu have you tried to boot to the last known good config?

Hmm, that is an odd problem. Try clearing your browser cache or maybe even try using a different web browser.

If the forum is giving you a message that the file type is not valid, it is possible that the forum admin has restricted that sort of file (mp3, wma, etc) from being uploaded. I am leaning away from the notion that it is a problem with your computer since you can upload to other sites just fine.