How to fix discrete graphics in lenovo and not throw the laptop out the window?

Question

AMD

Sobsno the situation is this:
laptop lenovo g510
win 8.1 pro x 64
discrete graphics intel hd (4600) \ amd radeon
chipset drivers installed from the manufacturer's website, new drivers for intel automatically installed by Windows. card, and all kinds of installed drivers for the radeon.
And the problem is this: on the manufacturer's website, the model of the Radeon card is declared: up to AMD Radeon HD8750M, on the oldi website (in which the laptop was bought) AMD Radeon HD8750M is also indicated,
BUT the amd automatic utility And the device manager show the model R5 M 200 \ HD 8500M. I tried to install the driver from AMD official site for HD8750M but it didn't change anything.
Well, the question is: I'm a fool and I have to go look for a check and make sure that they sold me a laptop bundled with an HD 8500M (but then why is the card displayed as R5 M 200 \ HD 8500M? and who does that anyway? My g 500 has a Radeon HD8750M , and suddenly decided to put HD 8500M on g 510? ) or do I have some unusual problems with drivers?
PY.SY: the g500 had a slightly similar problem: the utility did not see the video card there.
There everything was decided first by installing the old driver and then the new one. It didn't work very well here.
PY.SY(2): the system is new. in the device manager, in addition to all sorts of unknown bluetooth devices, there is also one unknown device, which I couldn’t google for ID because I don’t know how to do it very well (for some reason, Google gave out that it refers to the g410 video system)