Windows 7 - 3 Corrupted W7 Installations; Windows refuses to repair/restore itself

Hey everyone.

I have a huge problem... I have 3 corrupt installations of the same OS (Windows 7 U. 64 bit) in the same hard drive. I can't install any OS(es), and my original (working installation) no longer works. These corrupt installations are corrupt because windows installed incorrectly twice... they left old windows instead of creating a windows.old file.

When I try to start up any of these three installations, I get the same error:
"The computer restarted unexpectedly or encountered an unexpected error. Windows installation cannot proceed. To install Windows, click "OK" to restart the computer, and then restart the installation."

This also happens upon completion of reinstalling windows.

I have tried to wipe the drive:
most programs I see need windows to operate...
I've tried a few programs that can be booted, DBAN boots, but I get the same error every time: That DBAN has encountered a non-fatal error and that the error is usually caused by damaged disks.

So, is there any way that:
I can fix windows to install one of the hard drive wiping softwares?
Get DBAN working?
I can get a software that actually runs by booting with it and that correctly wipes my hard drive?

Thanks,

- Pilot

You can format during boot, just delete the partitions. If you would like a more thorough clean, try this

If the disk is damaged then you need to replace it, theres no workaround for it. Run disk manufacturer diagnostics tool.