HDD No Longer Booting-Hangs For Over 2 Hours-Stuck On Starting Windows 7?

I refuse to believe my 500g Sata Hard drive that has over 400gs of file and information, is all now magically a paper weight. No Physical damage has happened to the Drive at all. This is the Issue:Originally Half of the Drive was Encrypted with True Crypt and the other Half was the System Drive((C drive 50g)) and a "general" Drive/ ((175gigs)). The Problem started when some odd way it seems My Encrypted drive become corrupted to the point it would no longer easily mount. It would take 4~5Min's to mount as opposed to the normal 4~5 seconds.What happens when it did mount, The Drive was not working correctly. I couldn't access my files on that drive at all. Not only that, While it seemed like it did Mount the True Crypt Drive, my entire CPU became Non responsive. I couldn't do anything. I was unable to click on anything on the desktop, bring up task manager or even ctrl+alt+del to log off or anything. It was like it was frozen but I was only able to move the mouse...I waited a while((15~20Min's)) and went to restart the CPU by holding the power button.

Now When ever I try to load or boot from that Hard drive...Nothing Happens....It hangs at the "starting Windows" screen. I have windows 7-64bit ultimate. I tried to load from the Win 7 disk, and it hangs at a blank Screen. When I tried to use the repair feature of the Win Xp service pack 2((Remember windows XP *_*??))It hangs at analyzing the Hard drive "47850 asapii at 0 at 0 something something"..When I try to use the advance options of the Windows 7 boot, Safe mode of all types hangs at lading the drivers, Last Known good Configuration hangs at starting windows. Its Like part of the HDD doesn't want to load for anything in the world . And When I have mentioned Hangs I mean it sits there for 1~2 hours and nothing has changed.

I have ideas in my head But I don't even Know if they are possible. Oh Oh..at when I try to Load the HDD by having a back up 40g hard drive be the main booter it STILL hangs at the starting windows screen. I know its sometimes suggested to try it HDD in another CPU but if its not the main Boot Drive is that the same thing? Really don't have any Mobos that have Sata Slots for me to try that out on.I'm praying a simple chkdsk would Solve everything But there's no way I can Issue that Command. My Question(s) are:s there a Way to force the CPU to do a chkdsk command pre boot?Is there a way to have the HDD disabled at start up and enable it during the back up drives desktop((Via check for hardware changes or the "Manage" feature by right clicking computer from the start menu