|You are going to need an XP CD and working CD/DVD drive.|
I doubt if fixmbr is going to help you in the is case. If the MBR was corrupted to wouldn't even get in to Safe Mode. By the time Safe Mode starts to boot the MBR has done its job.
The fact that you can get into Safe Mode and not boot normally suggests a driver problem or a corrupted registry. Bring up Device Manager form Safe Mode and see if you have any yellow question marks against any items.