intermittent distorted display (screen tear??), Please help!!

Just recently this has begun happening and unfortunately i didn't build my machine so i'm not even sure where to start.

here's my specs i sincerely hope someone can help as i need logic for my final college year. Thanks alot!!

Dell E6420

Mac OS 10 el capitan

Operating System Windows 10 Pro 64-bit CPU Intel Core i7 3740QM @ 2.70GHz
Ivy Bridge 22nm Technology RAM 16.0GB Dual-Channel DDR3 @ 797MHz (11-11-11-28) Motherboard Dell Inc. 0H3MT5 (SOCKET 0) Graphics Generic PnP Monitor (1600x900@40Hz) Intel HD Graphics 4000 (Dell) 1023MB NVIDIA NVS 5200M (Dell)
ForceWare version: 376.54 SLI Disabled Storage 223GB SanDisk SDSSDA240G (SSD)

submitted by /u/CandourBalls
[link] [comments]