HTC one black screen, now in dowload mode with security warning

[AC Question]

my HTC one screen went black and I wasn't able to do anything with it. I held down the power button and volume up for 10 seconds then (accidentally) tapped the volume down button. black screen came up saying its in download mode with a security warning and giving me options to reboot to bootloader, reboot download mode, reboot, power down, or show barcode. What do I do? I don't want to loose my pics or phone info. Thanks for any help!