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#150
OK ... this is an unusual way to setup partitions. Usually the first partition is the "Primary" one and holds the boot code. Then the "Extended" partition with the "Logical" partitions inside it comes after the primary partition.
One reason is you can not boot from a logical partition. However if the boot code is in a primary partition at the front of the drive (for example the 100MB "System Reserved" partition Windows 7 installs) you can boot to an OS in a logical partition.
If you still cannot get Windows 7 to boot after this, I would suggest you need a second hard drive anyway to store you music files and to keep backups of your Windows 7 on a seperate hard drive. Get another hard drive, unplug the old drive and do a fresh install of Windows 7. Later you can save and transfer your files and settings to the new Windows 7 on the new hard drive.