If your Razer Blade won't power on, even when it's plugged in could have a faulty power supply, battery, motherboard, video card or RAM. As you have troubleshoot the laptop with [https://www.minitool.com/data-recovery/fix-my-laptop-wont-turn-on-009.html|the basics]. It could be a problem with an internal component.
That way more in-depth troubleshooting is required and a hardware repair may also be necessary to fix the problem. I suggest contacting the manufacturer of the laptop for recommendations on how to get it repaired. You can also take your laptop to a computer repair shop, as they may be able to diagnose the issue and replace the faulty hardware.