Problem with Video Settings!

I rely need help i changed my video settings resolution but now i get an error when i start Garry’s Mod it says

Failed to create D3D device I’ve been to the link it says and tried what it said to do but it didn’t work so all i need to know is how i can reset all of my settings to default.

Please help me.

System hardware specs

  • Processor: AMD Athlon™ 64 X2 Dual Core Processor 4400+, 2300 Mhz, 2 Core(s), 2 Logical Processor(s)
  • RAM: Installed Physical Memory (RAM) 2.00 GB
  • Graphics Card: ATI Radeon HD 4600 Series
  • Operating System: Microsoft Windows 7 Ultimate

HawkofGMod

Try updating your graphic card