I originally had Windows 7 installed in my system then decided to install Ubuntu 13.04 alongside it. When the system boots I get the grub menu but when I select Windows 7 the Grub menu just reappears (but ubuntu loads just fine). I did find a number of threads with similar problems but the Boot Repair output for those threads appeared to be different from mine and I did not want to risk further problems by applying an incorrect "solution". I would really appreciate any help.
Here is the output from Boot Repair:
Link: Complete Boot Repair Output
Sample Output:
Boot Info Script e7fc706 + Boot-Repair extra info [Boot-Info 3June2013]
============================= Boot Info Summary: ===============================
=> Windows 7/8/2012 is installed in the MBR of /dev/sda.
sda1: __________________________________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sda5: __________________________________________
File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: unknown filesystem type ''
sda2: __________________________________________
File system: ntfs
Boot sector type: Windows 7/2008: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files: /bootmgr /Boot/BCD /Windows/System32/winload.exe
sda3: __________________________________________
File system: ntfs
Boot sector type: Windows 7/2008: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
sda4: __________________________________________
File system: ext4
Boot sector type: Grub2 (v1.99-2.00)
Boot sector info: Grub2 (v1.99) is installed in the boot sector of sda4
and looks at sector 36725144 of the same hard drive
for core.img. core.img is at this location and looks
in partition 94 for .
Operating System: Ubuntu 13.04
Boot files: /boot/grub/grub.cfg /etc/fstab
/boot/grub/i386-pc/core.img