so i just used "whocrashed" and it says:
On Sat 08.02.2014 15:06:14 GMT your computer crashed
crash dump file: C:\Windows\Minidump\020814-23868-01.dmp
This was probably caused by the following module: atikmpag.sys (atikmpag+0xBD88)
Bugcheck code: 0x116 (0xFFFFFA8009FDA310, 0xFFFFF88007261D88, 0x0, 0x2)
Error: VIDEO_TDR_ERROR
file path: C:\Windows\system32\drivers\atikmpag.sys
product: AMD driver
company: Advanced Micro Devices, Inc.
description: AMD multi-vendor Miniport Driver
Bug check description: This indicates that an attempt to reset the display driver and recover from a timeout failed.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: atikmpag.sys (AMD multi-vendor Miniport Driver, Advanced Micro Devices, Inc.).
Google query: Advanced Micro Devices, Inc. VIDEO_TDR_ERROR
I also checked my Hardware and no heat problem here. CPU is not above 40C and GPU is not above 58C.
And sry for my bad english
And yes, AMD Radeon HD 7750.