You could run a startup repair: Startup Repair - Run 3 Separate Times
As the title indicates, it may be necessary to run it 3 times.
And while you were in the partition wizard program...did you notice if there is a separate 100 mb partition? If so, was it marked active? And if no 100 mb partition, is your C:\ partition marked active?
Also, one other thought...how old is your bios? Updating the bios once resolved a similar issue for someone I know. Are you comfortable flashing your bios? (run the 3 time startup repair first, though).