Mac keeps restarting after install
Ok my mac has been running really slow for about a year, I've tried all sorts but always getting the scrolling wheel, I'm on mountain lion and installed the original install disc leopard and clicked install, it's now turning itself off over and over again for the past hour is this normal? I have nothing on there I want to keep it's all backed up, will it reboot soon, cheers
iMac (20-inch Early 2009), OS X Mountain Lion (10.8.5)