Hi, I was running Windows 7 Home Premium x64 when I decided to give Ubuntu 13 a try. I made a bootable USB drive, and attempted to do a custom install alongside Windows. I had three partitions: dev/sda1, dev/sda2, and dev/sda3. sda1 was for boot, sda2 had the most disk space so I assumed that was where Windows was, and sda3 was HP recovery. I thought if I resized the sda2 partition, I could create a new one on which to install Ubuntu. I assigned that free unpartitioned space to ext3, I believe, ignoring the warning to setup a swap partition. When Ubuntu was installed, it loaded the purple startup screen to choose OS, but Windows 7 did not boot. Panicking, I rebooted from USB and removed ext3 and combined it with the existing sda2 partition. However, that partition is no longer recognized as Windows. When I boot, I get grub loader. Booting from Windows 7 CD and doing Startup Repair failed, the root cause found: No OS files on disk. (Repair action: Partition table repair). I am waiting on a ISO to download so I can burn a 7 disk and attempt to use bootsect.exe to set the MBR to "bootsect /nt60 SYS /MBR" However, I feel this might not work because the boot partition is not the one damaged, but the main one. All of my files are accessible through Ubuntu in the 625 GB Filesystem, so if I have to I'll just back up everything and clean install Windows 7, but if anyone can help me fix it without starting from scratch it would be hugely appreciated!!!