Bootable ISO - Create from Installation Files
Another method from SIW2 which worked for many here.
After burning the disk, boot from it to do a Custom install, using Advanced drive tools to delete all, create new, then format before install.
I hope you backed up your files. If not then you might want to try to get to desktop to run a repair install (upgrade over itself) to see if it helps although it will normally carry over in-place Upgrade corruption. Of course if you can get to the desktop then you can copy files.
Also boot into the new DVD Repair console and try a few Startup Repairs and System Restore to before problems appeared.
We can help you try to salvage or reinstall here.