In order to root my ZOPO android phone, I installed the MTK usb driver on Windows 8.1. After instalation, it caused error code 43 whenever any android phone was plugged in the system. Same problem even after I removed the driver using pnputil and reboot.
Initial research suggested to perform PC refresh which would remove all desktop apps. Luckily, with some patient, I found and followed this to uninstall the usb root hub driver and bingo!