check in the BIOS to see if your Acer recognizes a boot device. It is possible that you have a failed HDD or a corrupt OS. You can also set your boot order in the BIOS screen to an external USB or optical drive and use a bootable disk to see if it boots up. Right now my money is on a bad drive.
crownapple we would need to see the screen that you get on startup (after hitting F2)It is possible that you actually have an UEFI firmware setting. What OS are you running? There are differences between Win, Android etc. Post some pictures of the screen when it pop up with your question. Adding images to an existing question
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Been a long time- but I am having this same issue