The Q8300 is supported on your GA-P35-DS4 (rev. 2.1) | Motherboard - GIGABYTE Global
However, your Q8300 (yorkfield) processor is 10 years old and is not supported on Windows 10:
The Processor ID and Diagnostic tools run on multiple operating systems, are not specific to your processor, and are not an indication that Windows 10 is supported on your processor.
Now, none of this means that Windows 10 will not run on your processor. However, you will be at the mercy of Microsoft as far as Windows 10 running.
So, save yourself a lot of time and trouble and upgrade to a new(er) system that is fully supported on Windows 10.
I flashed BIOS yesterday (and some settings in bios) to version F14 and now i CAN install WIN 10 to my PC.
But now I have next problem because if I need choose disk for installation (I want instal this system at SSD) I cannot chose my SSD (Kingston) for installation therefore SW cannot create partition for installation...I want create it from unlocated space...