請問這圖片是顯卡問題還是螢幕問題？

Intel Core i7 3770
Windows 7 Ultimate Edition 64-bit SP1 (Build 7601)
CPU Arch : 1 CPU - 4 Cores - 8 Threads
CPU PSN : Intel Core i7-3770 CPU @ 3.40GHz
CPU EXT : MMX, SSE (1, 2, 3, 3S, 4.1, 4.2), EM64T, VT-x, AES, AVX
CPUID : 6.A.9 / Extended : 6.3A
CPU Cache : L1 : 4 x 32 / 4 x 32 KB - L2 : 4 x 256 KB
CPU Cache : L3 : 8192 KB
Core : Ivy Bridge (22 nm) / Stepping : E1
Freq : 3691.67 MHz (99.77 * 37)
MB Brand : Hewlett-Packard
MB Model : 3397
NB : Intel Ivy Bridge rev 09
SB : Intel Q77 rev 04
GPU Type : NVIDIA GeForce GTX 650-E-1GD5
DirectX Version : 11.0
RAM : 32768 MB DDR3 Dual Channel
RAM Speed : 798.2 MHz (1:6) @ 11-11-11-28
Slot 1 : 8192MB (12800)
Slot 1 Manufacturer : Transcend Information
Slot 2 : 8192MB (12800)
Slot 2 Manufacturer : Transcend Information
Slot 3 : 8192MB (12800)
Slot 3 Manufacturer : Transcend Information
Slot 4 : 8192MB (12800)
Slot 4 Manufacturer : Transcend Information

這是電腦規格，螢幕前3天才買的lg ips277L
可是這問題之前就有了，可以請問一下是什麼情況造成的？