Thanks for advice.....But NO. Didnt help.
its flickering in Win 10. Flickering in Win 7.
In the moment when I instal HD4000 driver... and it switch on 3D graphic....
May be that is a hardwear trouble?
How to check 3d accelertor WITHOUT HD 4000 driver's instalation?
Is it possible?
This message was posted on behalf of Intel Corporation
What is the current driver version you have installed? Please go to Device Manger> Display adapters> Intel(R) HD Graphics right click on Properties and then go to Driver, you will be able to see the version installed.
So... I foud the solution.
Firstly, based on thу fact that flickering was on both win 7 & win 10.... that push me thinking in the direction of hardware problem.
So... notebook was disassembled, complitly.... up to change the thermo paste on CPU & Chipset.
Everything was blow with compressor... clean with alcohol (he-he!)
And assembled back....
And - WONDER!!!!!!!!!! Problem's gone!
thanks a lot for your support.