Weird Graphics Glitches and games wont load

Sonic Adventure 2: Weird graphics spassms acts like a 3 year old was let loose with a paintbrush some paints and a brand new white wall

Half - Life: Wont even load. Nothing much I can say

These are the only games I am interrested in ATM might venture on into more games

System Specs:
CPU: Intel Core i3-3217U @ 1.80Ghz
GPU: Intel HD 4000
RAM: 8.0GB DDR3 1600Mhz
OS: Windows 7 Ultimate x64
HDD: 1TB WDC WD10JPVX-22JC3T0