Windows 7 Ultimate 64bit doesn't boot anymore.

Hi, i have a macbook pro 15" late 2011 and my windows won't boot anymore, not even in safe mode or anything, all i get is the startup repair that tells me it can't repair my computer and when i try to make a system recovery i get this;

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rstrui.exe - Application Error

The instruction at 0xfb08584d referenced memory

at 0x00000008. The memory could not be read.

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And when i try to boot windows with the last working settings i get a blue screen and my computer shuts off.

And i lost my windows cd.

Another funny thing is that i have an external HDD plugged in via thunderbold (and i somehow managed to get it to work on windows, but can't seem to write or modify anything on it via Mac OS, and when i try to boot windows with the hdd disconnected i get a blackscreen after the windows loading, then bluescreen.

I really need to get acces to my windows this w-e and this is just the wrong time for this **** so please someone help me fast ):

Thank's in advance.