New Computer Freezing

[DavidCzech]

Hello
I need help. I bought a new computer but he is freezing and sometimes restarting without warning.. When he freeze audio start buzzing and then nothing, just freezed screen and annoying audio. Problem is that this is happening only in my house.. I gave him back to shop (where I bought him) and they told me that they had him on maximum load for one month and nothing happened.. Is possible that I have weak sockets or PC have problem with mouse, keyboard or monitor ? (I discovered that my monitor is significaly brighter when plugged to new pc)
Some Specs :
Intel Core i7 5820K
NVIDIA GeForce GTX 980 Ti
750 W Power supply
16GB RAM
Windows 10
Thanks for any suggesting or advice and sorry for my English

 

[wpgwpg]

If you suspect your home power, you could buy a UPS (aka battery backup) and plug the computer into that. Also make sure you have the computer plugged into a 3 prong outlet that is well grounded.

Good luck.