Thank you for posting your inquiry in Intel Communities.
I have some questions:
Did you try the driver(s) provided by Gigabyte*?
Did you try uninstalling and reinstalling flash player or resetting your browser’s settings? Maybe they share a particular add-on that can be disabled or uninstalled for troubleshooting purposes.
I see it is an unlocked (K) processor; so, is the processor or graphics controller overclocked? Try resetting your BIOS settings back to default.
How long ago the issue started to happen? Was there any software installed or any settings changed in the system then?
You may also try a clean boot or a system refresh.
If issue persists, please provide the DxDiag report (press Windows* key + R key, type “dxdiag”, press OK and then click “Save All Information”) and more details about the issue, such as any error message or minidump file in case of Blue Screen of Death.
I have reinstalled my PC with win8.1 X64 and latest display driver, problem still exists. the warn logs is like this:- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">- <System><Provider Name="Display" /><EventID Qualifiers="0">4101</EventID><Level>3</Level><Task>0</Task><Keywords>0x80000000000000</Keywords><TimeCreated SystemTime="2014-12-04T02:12:50.000000000Z" /><EventRecordID>2414</EventRecordID><Channel>System</Channel><Computer>Stone</Computer><Security />
</System>- <EventData><Data>igfx</Data><Data />
This is the latest driver: https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=24596
Was there any change in your system before this issue started to happen?
You may want to check the following article: Graphics Drivers — Errors Reported By Microsoft*