It's very unusual there are no flags on the Win7 partition and hence no evidence it's even installed there. Did you do anything with the PW CD or otherwise that might have affected the OS?
So if you try to repair it with Rebuild followed by 3 Startup Repairs and it won't Repair, browse in with the rescue disk to see if you can rescue your files. If so then you might want to try more of the steps in Troubleshooting Windows 7 Failure to Boot
. If not you can skip to Clean Reinstall - Factory OEM Windows 7