I own a HP pavillion 8755c and the hard drive has went south on it. I want to get a new HD but am not willing to pay the hundreds of dollars that HP wants for a new one. Can I buy a cheaper HD and if so how do I know if it is compatible? I am interested in a Western Digital 80GB EIDE Hard Drive which is a far less expensive option. Will this HD work? Also it being an OEM version it won't have any accessories. What will I need? I saw that I may need a drive power cable. What is this and where should I get it?