The Recovery Disks which Dell had you make are booted to restore the computer to factory condition. They are
not the Repair CD. It says this quite clearly in Theog's post above. Please read everything thoroughly and ask back any questions you have.
You need to make a Repair CD to run Startup Repair, or use a Win7 Installation DVD of the same bit-rate version (32 or 64 bit).
Until you can get to a Win7 computer to make the Repair CD, you can try rebooting and tap the F8 key repeatedly, then see if the Repair console is on the
Advanced Boot Options menu.
If so, select Repair My Computer, see if it offers a repair and if not click through to run Startup Repair repeatedly from Recovery Tools list. However this is the same Startup Repair offered at boot which is apparently not working, and could be due to System File corruption, so you really need the Repair CD or Win7 DVD to run these repairs.
You can copy out your files using the DVD, Repair CD or free Paragon Rescue CD.
Copy & Paste - in Windows Recovery Console
Paragon rescue disk; change drive letter; recover data
Then you can run Factory Recovery from boot, use the Recovery Disks you made, or order Recovery Disks for Dell:
Dell Restoring Your Computer´s Software to the Factory Settings
Or find a Win7 installation DVD for your version to clean reinstall without the Dell preinstalled factory Bloatware:
Reinstalling Windows 7