Thanks for your post.
You may refer to these YouTube videos below:
a.) Download and burn a F-Secure Rescue CD.b.) Boot and scan with F-Secure Rescue CD.
Would say you need the Win7 64 installation DVD and you are sorted.
If rescue is not working you can make a fresh install of the system. Win 7 will move the old installation in a separate place therefore you will not loose data if you have safed all in under your user profile.
Once the system is back up you can brows to the old installation and copy your data to new installation.
That works as well with Win Vista
the F-Secure Rescue CD is based on Linux and scans NTFS-Drives too.
The OS that you use is completely irrelevant!
Please check the root folder of the dvd. If it contains a single file (*.iso), download ImgBurn or something similar supporting proper writing of ISO files.
ImgBurn is here http://www.imgburn.com/
Thank you all for your quick answers. I will try the diffent suggestions when i come home from work.