Gs65 stealth

I bought this laptop over the weekend and its been great but when I applied a -100mv undervolt the laptop no longer posts and ive tried the cmos reset button, taking the battery out and disconnecting the cmos battery and still same symptoms. Any help would be greatly appreciated. Tried the button on the bottom, disconnected the cmos and main battery for a while and nothing. It turns on the power indicator stays red, sleep light on keyboard is on but keyboard doesn't light up and fans run and cpu and gpu warm up like normal