Once you have downloaded the correct driver files ( .exe or .zip ), follow this sequence. – always install chipset drivers first.
The primary source for these drivers is the Zebronics Driver Downloads page. Visit the official Zebronics Support page.
Use Snappy Driver Installer (SDI) or Driver Booster as a last resort if manual install fails, but always prefer official sources.
Search for Intel HD Graphics drivers for 2nd/3rd Generation processors (Sandy/Ivy Bridge).