Hello and thank you for your question. I look forward to assisting you today. Have you checked to make sure you don't have a disc in the CD/DVD drive or a USB flash drive plugged in while you are trying to boot?
David. Please do not request remote assistance since you are unable to start the affected computer and I would only be connecting to the one you are chatting with me on.
My apologies for the delay David. I wanted to make sure your computer wasn't trying to boot from a drive other than the hard drive. Do you know if your computer uses a solid state drive?