It seems like you are facing an issue with the 64-bit Windows 7 installation that is failing to boot due to a problem with "rdyboost.sys" and is not responding to repair or restore attempts. Since you can access the second drive with the 32-bit Windows 7 installation, we can try some troubleshooting steps to potentially fix the boot issue on the 64-bit drive. Here are a few suggestions to try and resolve the boot problem on your 64-bit Windows 7 installation:
Method 1: Fix Boot Files
- Boot from Windows Installation Disk:
- Insert the Windows installation disk for the 64-bit version.
- Boot from the installation disk and choose the repair option.
[]Access Command Prompt: