Hi, well I was on my computer for a long time the other day and I put my computer in sleep mode for a few minutes, when I came back, the computer monitor was blank but the desktop and mouse still had a light, the computer was still going to sleep, I waited for a bit longer but I eventually had to turn the computer off using the power button, when I tried turning the computer back on, it kept turning on and off repeatedly by its self, booting up for about 3 seconds before turning off, I had to turn it off by the mains to stop this but I found out it stops if I hold down the power button long enough. The fans are working, and the computer does not get far enough into the boot up for there to be a picture on the monitor or for me to use F10, F1 or the delete button. Can someone please help, Thank you
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