The anniversary update is having compatability problems whith your charging system is what it sounds like. When that light is flashing orange, i don't think it's charging.
Did it come with Windows 10? Do you have an i7? Is the bios at the latest? Version 1.12
If not you can try the bios and see if it fixes it.
If not you may want to do a recovery back to factory and wait until the bugs are out of the update.