How-To Geek

Follow these instructions to get to a command prompt (and backup your files if needed). You should be able to use your system recovery options for this (no need for a DVD then).

http://www.howtogeek.com/forum.....?replies=1

Follow the tutorial to take note of the letters of your drives (C:\, D:\ etc.) from Notepad's "Open File" dialog. They may be different in an environment like this: for instance your recovery partition may be labeled "C:", and your Windows 7 may be labeled "D:", although this is rather unusual. Take note of their sizes too.

Then mark your Windows 7 partition as active. Use the following commands:

diskpart
(you are now inside DISKPART>)
list disk
select disk 0 (select the hard drive with Windows 7, sizes in bytes are shown)
list partition
select partition 1 (select the partition with your Windows 7 installation, sizes in bytes are shown)
active
exit

You can now try to restart. If it is not fixed, try to repair your bootloader. Change directory to E:\boot, where E: is your Windows 7 install DVD (check the drive letter):

cd /d E:\
cd E:\boot

Run the following command, where C: is your System partition (check the drive letter):

bootsect.exe /nt60 C:

Then run:

bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd

Then restart your computer.

Ok, then let's try going slowly, step by step. It is not that hard, despite how bad it sounds :) .

First, download one of the ISO images from here:
http://www.askvg.com/direct-do.....nd-64-bit/

If you know which Windows version you have, download that one, else, download Windows 7 Home Premium with Service Pack 1 (SP1) 64-bit. Tell me when you have that file.

OR - If you are using another Windows 7 computer, you can create a system repair disk instead of downloading that big ISO file. First two screenshots here:
http://www.howtogeek.com/howto.....windows-7/