IPhone data back up on HP laptop.?

Hey! I took a back up of my iPhone 7 on my friends laptop(HP). After a month, the laptop was updated by my friend and since then I’m not able to restore the backup from iTunes. The iTunes says my phone has never been backed up on this laptop but the C drive shows that 70GB space has been covered with my data only.... show more Hey! I took a back up of my iPhone 7 on my friends laptop(HP). After a month, the laptop was updated by my friend and since then I’m not able to restore the backup from iTunes. The iTunes says my phone has never been backed up on this laptop but the C drive shows that 70GB space has been covered with my data only.
How do I recover all those photos and videos?
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