A full Windows 7 64-bit installation disk includes all the "Repair your computer" tools found on a standalone repair disk. If you have your original product key, you can sometimes find these via community-verified archives like the Windows 7 Repair Disc (x64) on Internet Archive.
Sites like NeoSmart Technologies offer pre-made recovery ISOs for a small fee, which are useful if you don't have a second PC or an original disk. How to Use the Repair Disk How to create a system repair disc. | Sony USA
Finding a reliable way to can be tricky because Microsoft no longer hosts the standalone ISO directly on their main support pages. However, having this tool is essential for fixing startup errors, performing system restores, or recovering from a blue screen when your PC won't boot. Where to Find the Windows 7 64-bit Repair Disk
Because official downloads are scarce, you have three primary ways to get the recovery tools you need:
If you have access to another working 64-bit Windows 7 machine, you can create a repair disk for free.