I don't think it is a bad video chip issue rather a improper colour settings. If you are using windows 7 you can use colour calibration in control panel to fix this
You Can get almost every graphics card you can get, depending upon the power supply, CPU and PCIE version you have. I'd recommend you go for a HD 7750 or a HD7770 if you have a PSU lower than 350 watts or a slow processor You can get a HD 7850 or a GTX 640 or GTX 650
You can disable your integrated graphics from the bios.