I have a dell inspiron N5010 laptop. I installed Ubuntu 13.04 along side with windows in another partition. After restarting my laptop it is showing 'windows 7(loader)' but an error is occurred while loading. My Ubuntu 13.04 is working great. Can any help me out with my problem.
I had the same problem and fixed it by reinstalling the Windows bootloader as my main/default bootloader and then adding the Linux bootloader (probably GRUB 2 for Ubuntu users) to the Windows bootloader.
To fix Windows bootloader and make it the default:
For Vista and 7:
To add Linux to Windows's bootloader
Boot into now-bootable Windows and install EasyBCD (free for personal use). Click "Add New Entry", click the Linux tab, choose "GRUB 2" for the type, select the option to automatically find the drive and click "Add Entry".