The recovery disk(s) hosted on this site contain no Vista Installation Files, and cannot be used to repair a broken install of Vista. That's why you get an error if you click on the "Install" button.
They're provided for OEM PC owners whose manufacturer only provided the PC with a recovery partition, and no separate bootable media.
They're provided to enable you to fix a broken boot process, to access system restore to take you back to an earlier point,or to enter the recovery console.
Try F8 at boot and run a Memtest. If OK ,then boot into safe mode and use system restore to take you back to an earlier point, before these symptoms appeared.
If you can't find a suitable restore point, use the recovery console and the xcopy command to rescue your personal data files onto a flash-drive or optical backup, then follow the manufacturer's instructions that came with your PC to do a factory reset and reinstall of the whole environment.