After upgrading from W7, glitchy bars on screen.

Some examples: http://i.imgur.com/K3G7q7U.png

They come and go at seemly random times, moving the mouse behind them, or changing the display behind the bars makes them go away temporarily. I've updated my graphics drivers, and never had this issue before upgrading from W7 to W8.1

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 8.1 Pro, 64 bit
Processor: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 8
RAM: 12141 Mb
Graphics Card: Intel(R) HD Graphics, -1924 Mb
Hard Drives: C: Total - 1430696 MB, Free - 934194 MB; E: Total - 99 MB, Free - 59 MB; H: Total - 476837 MB, Free - 35981 MB; J: Total - 1907727 MB, Free - 1145440 MB; L: Total - 715402 MB, Free - 584760 MB;
Motherboard: Gigabyte Technology Co., Ltd., Z68XP-UD3
Antivirus: Windows Defender, Disabled