HI VicBlizz:
Thank you for post. I will do my best to assist you!
I understand that you got a BIOS HDD Quick Test - Fail (303) error. Here is a document on "Testing for Hardware Failures (Windows 7, Vista)" click here. You will notice under the failure codes, the 303 error code, refers to the hard drive failing. I would strongly recommend backing up your data. I am sending you the link to the service guide for replacing/ recovering from hard drive failure. click here. Please feel free to reply if you require additional assistance.