I'm having an issue with an Acer notebook of mine. When I switch it on, I get a black/blank screen (the computer is booting up still, and the HDD light is flashing like mad) until I get to the part where it logs in and makes the log-in sound, then, the screen works as normal. I've tried using an external monitor, and this solves the problem, I can see the full bootup, I just can't see it on the laptop monitor. It's obviously not a monitor issue as it works once it has booted. I've spent ages on Google trying things people suggest, but to no avail. Anyone got any ideas or solutions?