system
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Had another idea. I’ve used this one before just once. I had a non booting Windows 7 machine so I booted into a Macrium Reflect recovery USB that I created using another machine and chose the “fix boot problems option”. It worked.
Here’s the info:
http://kb.macrium.com/KnowledgebaseArticle50168.aspx
The only drawbacks are that it needs to be created on a machine running the same version of Windows 7 ie 64bit for a 64bit machine and also requires a huge (around 1Gb) download to create the recovery USB.