A few minutes ago, my s10e started artifacting really aggressively, and restarted itself. Happened twice, until the screen completely went black, and I could only to get it to power back on after pressing the volume down + power buttons while it was charging. Shut itself down after the logo was displayed however. Have no managed to get a display out of it since.
@JTfish: With the phone powered off, please press the Power and Volume Up keys together until the Samsung logo appears on screen. Release the buttons at this stage, and you should see a Recovery Mode screen. Using the Volume Down button, scroll to Wipe Cache Partition, and hit the power button to select it. Select 'Yes', then scroll to Reboot System Now on the Recovery Menu, and tap the Power button. Are you able to boot the device up in this manner? If not then I recommend reaching out to our Help Desk on 0333 000 0333, or on Live Chat via the link below, where an advisor will be able to assist you further, and arrange any necessary repairs.