uefi bootable windows 7

I have a Dell G5 5000 with an i5-10400F, 1650 SUPER, 32 GB RAM (unmatched, but doesn't cause issues), 512GB NVMe I have made a Windows 7 SP1 USB, and then integrated the following drivers into the install...

I recently got this gpu http://www.amazon.com/MSI-GTX-960-2GD5T-OC/dp/B00SAYDRLC/ref=sr_1_3?ie=UTF8&qid=1440217934&sr=8-3&keywords=msi+geforce+gtx+960 and also changing my power supply because I currently have only 230 watt turbolink. But worried it will fry my motherboard which is...