I get this message<windowsroot>/system32/hal.dll as it tries to boot Windows XP Professional. I have tried to load the recovery disc and I can't get that to come up. I have tried safe mode- nothing. How do I get my computer to come back up. I was installing Norton Antivirus 05 from the internet and it froze and upon restart it gives me this<windowsroot>/system32/hal.dll Please help.