Firstly, get safe by rescuing your data.
Use Ubuntu Live CD to Backup Files from Your Dead Windows Computer - How-To Geek
Then, don't worry about the burn. If you see "press any key to boot from CD" then the disc burned OK.
Unfortunately, the MS repair disc (that's what it is basically, with a few NST extras), can be afflicted by the same HDD problem which stops your PC from booting (it reads the OS partition as it boots), which not only stops you from getting to the "startup repair" but also the "command prompt" screen where you could run chkdsk to try fixing the HDD problems.
All is not lost. Other free partition managers can be obtained which are bootable and also contain the facility to check (and hopefully repair) your damaged file-system.
If that says it successfully repaired anything it found and you still can't boot, you should be able to boot the Windows repair disc at that point and try "startup repair" again.