*Before.You just want to make sure you have covered all the basics before trying a RE-flash, double check all your cable connections and that ram is sitting in the slots correctly etc, and only OS hard drive connected, no other usb plugged in, run 1 ...
If that clear cmos button is questionable just pull the battery out and disconnect 240 mains. leave for 5 mins or hold down power button to drain any residual current.Replace battery and boot, failing that do the below method.I would just go the firs...
Just a thought, can you get into bios and hit F5 to default everything, also check your thermal paste on cpu and gpu. I found some info which ill paste below but you probably have already trolled most pages. Failing that un-plug everything and clean ...
G'Day, Always have had ROG gear going back to my old Forumla IV. upgraded to the z390-e and thought i may as well join the forums to help out where i can. Cheers