how to record lecture in obs studio | windows 7,10 &11 | obs not working 

In this video, I have talked about how to record lectures in OBS.
Equipment used in this video:-
Laptop:- Lenovo Think Pad i5, 8GB RAM, 256GB SSD
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Mobile:- amzn.to/3kvRX0U ( Aapko ye bilkul nahi lena hai)
Required video to watch:-
Pentab Unboxing:- • Best pen tablet for on...
Mobile as a webcam:- • How to use mobile as a...
My laptop recommendation:- • Top 5 laptop under 50000
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