Yeh, guess a power outage probably wouldn't shut down a laptop.

Try holding at power on to get to the Grub menu. If that works, you can hit to edit your boot settings.

There is a line that starts with 'linux' followed by some options. Add a space and "pci_aspm=off" to the end of that line, then press or + to boot. If that doesn't help, try again with "pci=noaer"

If you get into the menu, but neither of those help, try going to "advanced options" then selecting an older kernel version or the recovery mode, if you're comfortable on the command line.

This can be caused by a bad upupdate, so if you system boots, go ahead and install any pending updates.