Two things to try;
1. VLC player (free)
2. K-lite codec pack (free)
If no luck, ask you girlfriend about the encoding used inside the avi-file. Maybe she can convert it to something you can view?
Kees
My girlfriend send me few movies (.avi format) on a USB from Indonesia. I'm from India. She says that they were functional movies but I can't open them on my laptop. She used windows 8 and I use windows 7. I tried several players and never installed new km player but nothing works. Please help.

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