How to repair Windows 7 boot?

julian23561

Honorable
Jan 25, 2013
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I installed Ubuntu 14.04 64-bit on my laptop with Windows 7 Home Basic 64-bit pre installed. Unfortunately, I see no boot option for starting windows and boots directly to ubuntu, I don't have any kind of installation media to perform a startup repair. So how can I repair win7 w/o breaking anything?
I hope you guys could help me w/ this matter. Thank you very much.