The PC keeps turning off and turning back on without going to the start-up screen. It shows the hp logo and then shuts down to black and turns on again, hp logo, then back down. This happened when I tried to update from Windows 8 as this is a hand-me-down from a friend and was deleting files to make room. I do not believe I deleted anything of value just old word documents and apps like Twitter. I do not understand why this is happening.
Please help.
The problem may be both in hardware and in software. First, you need to figure out why the laptop's malfunction is hidden. Try resetting the BIOS settings. When you turn on the laptop, press F2. There you will find "delete default settings". This method helped me once when turning on my computer was interrupted by the image of the Microsoft logo. But now, I use cheap windows vps, which allows me to work with even the most complex programs on a simple laptop. Still, I advise you to consult a specialist. He will be able to carry out a comprehensive diagnosis of your device.