I've had this problem for ever! I attempt to update my ATI drivers (ATI Radeon HD 4800 Powercolour Series), and half way through the installation the screen goes black and I get "No Signal". Now the thing is, it's not my monitor, nor VGA/HDMI cable. A while back I had a really old dell monitor, same problem, recently I got a new 24" flatscreen INSIGNIA with an HDMI cable, same problem. I looked into so many answers for this and nothing works. Here is what I have tried: Safe Mode: Uninstall drivers from Device Manager, reinstall drivers from AMD .exe... Error: "Fail Detection Drivers" ... Okay Uninstall drivers from Device Manager, reinstall drivers through Device Manager manually "Your divers are already up to date" ... how can that be? I've also uninstalled the drivers in safe mode, rebooted back into normal mode, and the drivers reinstalled automatically, but it installed to version 8.930.0.0, the version I was at. This is a screen shot of my driver. You can notice the driver version is: 8.930.0.0 I've almost given up! I just want to update my drivers!