B540p double problem: loud noise and not working touch! Help please!

Hello! I've bought an IdeaCentre B540pa (57314172) just 5 days ago. And suddenly two problems appeared. 1) My touch has ghost touching or self-touching. It's impossible to do anything. Sometimes for 5-10 minutes touch works ok, I can do things with fingers. But most of time it looks like a vertical line of self-touching fingerprints at the right side of lcd panel. 2) Even under little load my cooling fans going crazy! Diagnostic software shows diode gp (gt650m?) is overheated. Instantly temp rises till 93-95 degrees Celcium. Doesn't matter what I'm doing: surfing, or listening, or watching video. Due to something (they don't say why) local Lenovo service can't do repair. They say it's faulty motherboard and touch panel. They don't want to do a warranty repair. Instead they say to return my b540 back to shop, so the shop had that mess. But I want to try something by myself to repair, do something. 1) I opened back panels of b540 and now I see that when I push ON button to start the desktop a red diode is lighting up on touch board controller (a little board in the bottom middle). Is it normal or must be replaced? Will it solve the touch screen problem? 2) Recently I've read here at the forum, that people had similar problems with overheating. And that their problem was solved only with motherboard replacing. Is this the only solution? Of course I can return my desktop to the shop, and they will refund me. But I've paid 600$ for that b540, and there is no similar great desktops in that price range. At least in my city in Russia. They have b550 models, but they twice the price of my b540. I want to do something, make it work, and enjoy it with full specs: touchscreen, silent cooling, big screen etc. Please, help me deal with my thoughts and my b540p!

Thanks for advice, but I have already tried to calibrate. Nothing.
It's is very strange problem with touch. Right now, when I'm writing this the "auto-touch" or "selftouch", whatever name it, is zooming, moving page in the browser, and trying to make my life worse. The only way is to disable HID-compatible device is Device Manager. Another way is to have two or three fingers of a hand at the glass panel surface. It's strange but this action makes selftouch be under control. At least it stops zooming, moving. There is a little focus/unfocus problem, like screen is loosing and finds focus. Text goes a bit smaller, and again becomes bigger. I hope you understand what I'm trying to say.

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Moderator Note; s/n edited for members own protection
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