I searched already windows support.
The awnser is this:
This scenario usually indicates a problem with the hardware. To help isolate the problem, check the following items:
1. Overclocking: Disable overclocking to see whether the issue occurs when the system is run at the correct speed.
(I have never overclocked cpu or gpu).
2. Check the memory: Verify the memory by using a memory checker. Verify that each memory chip is the same speed and that it is configured correctly in the system.
(I ran memtest overnight with no problems)
3. Power supply: Make sure that the power supply has enough wattage to appropriately handle the installed devices. If you added memory, installed a newer processor, installed additional drives, or added external devices, such devices can require more energy than the current power supply can provide consistently.
(I had no problems with wattage and the only thing i added that requires more energy was the K95 RGB keyboard which needs 5V as i can see from the bottom sticker...)
4. Overheating: Check whether the system is overheating by examining the internal temperature of the hardware.
[Desktop pc has 2x120mm front/rear, 2x140mm side/top and a Cooler Master Hyper 212 EVO CPU Cooler. Maximum temperature for GPU is 52C, and CPU 50C in 100% usage (stress test).]
5. Defaults: Reset the system back to the system defaults to see whether the issues occur when the system is running in its default configuration.
(I formated the SSD and reinstall windows 7 ultimate 64bit. Installed factory drivers from MoBo and GPU CD. Reboot while playing CSGO happened again. I made all possible updates (drivers, Microsoft Net Framework, Windows, BIOS) and it's still happening.)
For now, my desktop is back for hardware check up.
No matter what, i'll update my news.
If there are no hardware problems i am sure 99% that keyboard causes failure from the moment it is attached and it's drivers installed.
If they don't find anything suspicious, i'll try one last thing.
Another format, reinstall windows, update drivers and use my old keyboard without connecting and installing drivers and CUE of K95 RGB.
Thank you for your time zheren159! :)