Hi! My Mac Pro 5,1 Mid 2010 has been running fairly well recently, apart from an issue where I cannot seem to get it to upgrade past OS X 10.13.4, Boot ROM version MP51.0089.B00, over the last few months.
But the other day, after I powered it up and was on it for about five minutes, the screen suddenly went grey with thin white lines running horizontally across it, then it powered itself down after about 30 seconds and immediately tried to power itself on again, only this time unsuccessfully...
MP 5,1 -Won't boot up with black screen and continuous chime
But the other day, after I powered it up and was on it for about five minutes, the screen suddenly went grey with thin white lines running horizontally across it, then it powered itself down after about 30 seconds and immediately tried to power itself on again, only this time unsuccessfully...
MP 5,1 -Won't boot up with black screen and continuous chime