OK, your response tells me that the order of menus goes like this:
displayorder {e689b1c9-...
{e689b1ca-...
If you now look at your two boot menu items then you will find that {e689b1c9- points to an incomplete number of entries whereas {e689b1ca- is complete. This is the second menu item. You can therefore delete the first menu item while in msconfig.exe. I would
now do this:
- Set the BIOS so that it uses the CD drive as its primary boot device.
- Boot the machine with your Windows 7 installation DVD or with your Windows Repair CD. If you do not have the latter then this is a great opportunity to make one.
- Convince yourself that the machine does boot from the CD or DVD and that you can get into the Repair mode.
- Boot normally.
- Delete the first menu item in msconfig.exe.
- Reboot the machine normally.
If the machine fails to boot (against all expectations) then you can fix it by going through steps 1..3 again, then get the Repair mode to fix the boot environment.
If this is not safe enough for you then you could take an image of your whole system before running msconfig, using the Windows 7 imaging facility. Later on you could restore the image via the Repair facility as described above.
Enjoy!
_________________________
If this was helpful, please vote by clicking the green triangle. If it solves the issue, click "Propose as Answer". Thanks.