I can't upgrade my OS, all the times I've done the upgrade from the App Store, when it restarts it gives no video signal. I have a Gigabyte GA-Z87n-WIFI with Intel 4600. I also did a new installation, then upgrade (Multibeast was going after...) but then I had kernel panic on reboot, and when I rebooted on safe mode, again no video.
Not enough with that, I can't download the new Mavericks app from App Store as it gives me an error all the time (on about 2/3 of download). Perhaps servers are too busy?
Please, guys, am I bad luck Brian or something?