You'd probably want to just go ahead and get a $100ish chromebook with 4gb ram. You are not going to run into any good windows laptops, probably just a old dual core i3 and definitely no 8gb ram.
If you want a decent windows laptop you need to increase the budget to ~$500, anything under that would better off to go with a chromebook------you can still browse chrome, watch videos and do some of researches.
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