My laptop is a hp pavillion dv6 and it has just refused to boot. Each time I turn it on, it loads the hp logo screen and gets stuck there for days. I've entered bios utitlity but I noticed something queer, the bios utility screen freezes after seconds. I've checked my ram sticks on another laptop, checked my hard drive, everything okay. I've tried hard reset, removed my CMOS battery. I've tried startup test it gets stuck at several points. All signs point to bios, but what do I do next.