@Richie4654 , welcome to the forum.
I am sorry that you are having these problems. Changing the resolution should not have caused a motherboard to fail. It is most likely a glitch in the system. The first thing that you should do is Clear the CMOS. The CMOS is a chip on the motherboard that stores the BIOS/UEFI settings. If you clear it the BIOS is reset to the original configuration. Here is the Motherboard Specifications page. Scroll down towards the bottom of the page to the section titled "I/O Ports and Jumpers/Jumpers". This will help you locate the jumper to clear the CMOS.
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HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)
Custom build: Corsair 750D Airflow (Full Tower); MSI MEG z390 ACE; i9-9900K processor (OC'd 5.025); Corsair H150i cooler; 32 GB Corsair Vengeance Pro 3200 memory; MSI RTX 2080 Gaming X Trio video card; Samsung 970 Pro 512 GB; Samsung 860 EVO 1 TB
HP Spectre 360 Convertible; i7-7560U; 16 GB memory; Intel® Iris™ Plus Graphics 640; 512 GB PCIe® NVMe™ M.2 SSD; 13.3" diagonal 4K UHD UWVA eDP BrightView WLED-backlit multitouch-enabled edge-to-edge glass (3840 x 2160); Windows 10 Pro 64 with Windows Ink
HP Photosmart 7520 AIO
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