How do I reinstall Android on my PC?

To reinstall Android OS with or without PC, first of all, go to Google and type for custom ROMs available for your phone model and download them to your SD card. And then switch off your Android phone. And go to custom recovery mode by pressing the volume up or down button and the power button simultaneously.

How do I wipe and reinstall my Android operating system?

Just look for the Backup menu on your phone’s settings, and there select Factory Reset. This will leave your phone clean as you bought it (remember to save all important data in a safe place before!). “Re-installing” your phone might work, or might not, as it happens with computers.