What is broken? Screen flickers, fans, battery are not working?

In
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Today I had my laptop cleaned in a repair store (clean fan and renew thermal paste), when I turned it on at home one of the two fans did not work, so I went back again, now the laptop was screwed on again and the bug was searched, once the battery was gone (no idea why?) And then the screen has at some point started to have errors, so at random places to flicker, stripes that flash for a moment.

Now the laptop stays there, and they are looking for the error (s).

Does anyone have ideas which suddenly made all the mistakes? I want to know if possible cost may come to me as it happened during the repair.

Pa

If the motherboard accidentally damaged or the PSU (power supply) so that motherboard is no longer properly gets power and thus can't properly forward to the fan or the graphics card.

But I do not know exactly.

no

Um, to be honest:
There are wear parts on the car…
A notebook also has such. In cheap manufacturers often the hinges from the screen but sometimes also the cable that leads through the hinge.
Over time it is normal that such problems occur when using a notebook. Just as a lithium ion battery of now gives up on the same is unfortunately also normal.

If you are unlucky it is not the cable to the display but really the display itself.
By screwing everything is nunmal deformed and squeezed somewhere and and and…
Gaming rather on a real desktop and if that is not possible, then you have to plan a new notebook after 2-3 years, unfortunately… Is depending on the use or type of use.

In

Nagut, the battery is now giving up the ghost can be yes, but how should suddenly the fan stop working and the screen strange errors?