Windows 7 starts in safe mode only

StartUp Repair often works from a Windows 7 Installation Disk or Windows 7 Repair Disk
when it does not from Recovery or a Recovery Disk. If needed how to make a Windows 7
Repair Disk is below. A Repair Disk can be made on any computer with a CD burner running XP, Vista, or Window 7 as it uses no files from the Host computer.

You can try some of these in Safe Mode - repeatedly tap F8 as you boot.

If you do not have a Windows 7 disk you can borrow a friends as they are not copy
protected. Your System maker will also sell the physical DVD cheap since you already
own Windows. Also you can make a repair disk on another computer.

Try Startup Repair - (If at ANY point you gain some but not full access to Windows come
back and try Startup Repair again.)

How to Boot to the System Recovery Options in Windows 7
http://www.sevenforums.com/tutorials/668-system-recovery-options.html

What are the system recovery options in Windows 7?
http://windows.microsoft.com/en-us/windows7/What-are-the-system-recovery-options-in-Windows-7

Try StartUp Repair from Recovery Options or Windows 7 disk.

How to Run a Startup Repair in Windows 7
http://www.sevenforums.com/tutorials/681-startup-repair.html

Also from the COMMAND PROMPT of Recovery Console (if possible) or a Windows 7 disk

Start - type in Search box -  COMMAND   find at top of list -  RIGHT CLICK  -  RUN AS ADMIN

sfc /scannow

How to Repair Windows 7 System Files with System File Checker
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

Then run checkdisk (chkdsk).

How to Run Disk Check in Windows 7
http://www.sevenforums.com/tutorials/433-disk-check.html

Retry Startup Repair after Chkdsk.

If needed after those you can try System Restore from Safe Mode or the Recovery or Windows 7 disk.

How to Do a System Restore in Windows 7
http://www.sevenforums.com/tutorials/700-system-restore.html

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If you need to make repair disks - these help repair Windows not re-install.
Often a these disks will help when the OEM Recovery Disk does not.

Download Windows 7 System Recovery Discs - now charging $9.75 for the ISO
images to make the disks. (These can be made on any computer running XP,
Vista, or Window 7 that has a CD/DVD burner.)
http://neosmart.net/blog/2009/windows-7-system-repair-discs/

How to Create a Windows 7 System Repair Disc - Free (Must be made on a
Windows 7 computer running the same 32 or 64 bit.)
http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html

Welcome to Microsoft Software Recovery
http://www.microsoft.com/en-us/software-recovery 

See MVP Andre Da Costa's message in this thread.
http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_install/how-can-i-download-gatewaywindows7recovery-disc/3c0ecd74-cfc1-4188-89c7-a6bbe8113ee1

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If needed :

What to do if Windows won't start correctly
http://windows.microsoft.com/en-us/windows-vista/What-to-do-if-Windows-wont-start-correctly 

How to Boot to the System Recovery Options in Windows 7
http://www.sevenforums.com/tutorials/668-system-recovery-options.html

What are the system recovery options in Windows 7?
http://windows.microsoft.com/en-us/windows7/What-are-the-system-recovery-options-in-Windows-7

A Repair Installation allows you to keep the programs and data though redundant backups are always a good idea.

How to Do a Repair Install to Fix Windows 7
http://www.sevenforums.com/tutorials/3413-repair-install.html