What happens if you put the old CPU back? Does it work again then, or did you mess up?
Ive just upgraded my old i3 CPU to a i5 and the computer is turning on properly (fans are working and lights too) and in the screen monitor it appears the bios and when I save and save and exit from BIOS (without making any changes) windows won't start up but computer is still on withou showing anything on the screen HELP!

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