Why does my Computer screen mess up after i overclock (Using AMD Overclock or whatever. AMD users should know)

Jun 29, 2018
2
0
10
hey. So when i overclock my Graphics card a bit, My screen Goes crazy sometimes. not like. it goes black, and other kind of colors. but. there are huge chunks of Pixel missing. in my Wallpaper Etc. It didnt do that before.

My Specs:
AMD Radeon R7 250
5GB of ddr3 Ram (4.75 GB Available)
Intel Core Duo E8400 @3.0 GHz
Power Supply : Cant read it off the Label.
System: Windows 10 Home
Monitor/TV: Technika 15 Inch TV
Idk the hard-Drives neither

I know Its a Crappy System. but. i just need to know. why my gpu is messing up. *IT DIDNT MESS UP BEFORE*
It still can run Fortnite tho. epic render distance,epic textures, resolution texture at 100%
 
Jun 29, 2018
2
0
10


I know. but like...I reinstalled my pc. after i reinstalled my pc, it still glitches out. Even with factory overclock(my computer screen/TV)
(only while watching a video,but its just the smallest line so.. ye)