Bricked my g2 windows failed to install driver in download mode

Dear brothers I've unfortunately bricked my device by installing recovery through autorec ,it displayed recovery installed successfully and asked me to reeboot to recovery i tapped yes as a result lcd of my g2 got weird and nothing is visible due to vertical lines but it though enters in download mode but download mode drivers got failed to install and just showing android device in the device manager of my pc... what to do next plz help
I do already have lg united mobile drivers in my PC but it does not still work in download mode