Windows 10: Touch screen not working for Lenovo Yoga c740

I have tried absolutely everything from uninstalling the device to re installing Windows 10 and this is driving me INSANE. Has anyone had this problem and fixed it?

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Lenovo Yoga C740 laptop

Hello, I am looking at a laptop with touchscreen right now and it's coming with 2 options of processors.

Lenovo Yoga C740 (15)| Build Your Own Laptop | Lenovo Canada

i5-10210U
i7-10510U

So I looked at some benchmark websites and these 2 processors don't seem to be very far apart, it's hard to tell how much faster the i7 could be.. So I wonder if it's really worth spending the extra 100$ for the i7.

It's mostly going to be a office computer, perhaps with small games.. web browsing, usual multimedia, I don't believe too much video and audio edition or any encoding, virtual machines..

would you consider that the i7 is much better overall, better value, or both are too close to spend the extra bill?
And do you have an opinion on these Lenovo Yoga computer with touch screens? Are they of good overall quality, nice screen? Just to get perhaps third party opinions

Intel Core i7-10510U vs. Intel Core i5-10210U - Benchmark and Specs

And finally if we think about graphics both use the Intel UHD and according to these websites, it's exactly the same thing except for the Max dynamic frequency the i5, it's 1.10 GHz and 1.15 GHz for the i7

Is it safe to roughly assume that on small 3D game, the polygons, both processors will provide about the exact same performance?

Intel(R) Core™ i5-10210U Processor (6M Cache, up to 4.20 GHz) Product Specifications

Intel(R) Core™ i7-10510U Processor (8M Cache, up to 4.90 GHz) Product Specifications

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Gee, nobody has an opinion..

 

lenovo yoga screen cracked

how much would it be to replace the screen on a Lenovo yoga? little brother stepped on it and the touch screen doesn't respond..... so its cracked and the touch screen doesn't work..

 

lenovo yoga 260 touch screen stopped working

lenovo yoga 260 touch screen stopped working

please help!!