umm, sounds like your video card isn't working, acer logo comes straight from the motherboard after that your video card kicks in and either is set to settings that your monitor doesn't support or video card is malfunctioning.
hmmm. Having had our household important stuff moved (quickly) because of a wall of water coming down the river from Canada, I wondered if there may have been too much bumping, etc. Thanks for the suggestion. I'll just use my laptop and have the desktop checked on Monday.