My PC freezes up for a few seconds every hour exactly at xx:43 (ex: 10:43, 1:43, 6:43) and all video/mouse/keyboard input stops, but sound keeps playing. It's been doing this for a few weeks, I've restarted my PC and it kind of fixes it, for a day or two, then it gets right back into it.
Motherboard: Gigabyte Z98X-D3H-CF
CPU: Intel Core i5 4670k @ 3.4GHz
RAM: 8GB DDR3-SDRAM
Video Card: AMD Radeon R9 290
HDD: Seagate 1TB, Seagate 2TB, Seagate 160GB.
Monitor: BenQ RL2455 (24")
OS: Windows 7 Home Premium (64-bit)