Unable To Correctly Boot Into Windows 7?

I was playing around with a program called PartitionMagic, because I wanted to convert my external harddrive from NTFS to FAT32, but it didn't work, so I tried another program. Partition Manager. As soon as the installation started, the computer had a BSoD, and has started having this every time I try to boot the Computer.At first I thought this was only caused by the harddrive, but I put it to a test, by removing the harddrive, and adding my laptops harddrive instead. Sadly the same thing happens. It boots into the Windows logo, and then a BSoD appears, restarting my PC yet again.I've tried launching the Startup Repair, but it results in failure. The description tells me that the "Boot Configuration is corrupt", so I tried searching for a fix on this.

That led me to trying bootsect.exe and bootrec.exe on the command prompt, through both the advanced startup repair thing, and through the Windows 7 Installation DVD.Even though all the commands I've ran say they were executed successfully, it still gives me a BSoD on startup.As a last resort, I tried to format my harddrive through the Windows 7 DVD. This is where I noticed that it recognizes my harddrive, but tells me there is only 100 or so mb on it.Also if I try to do a system restore, it gives me "an unexpected error: A device attached to the system is not functioning. (0x8007001F)