I have the latest and i even reinstalled the gpu drivers.You can use DDU to uninstall your GPU drivers and then reinstall the drivers, after a reboot, with the latest sourced from AMD's support site. Install the drivers in an elevated command, i.e Right click installer>Run as Administrator.
What is the make and model of your PSU and it's age? Which version of Windows 10 are you on? Are you on the latest BIOS update for your motherboard?