My rather old Dell C840 started behaving strangely. When I try to start it up, it doesn't do anything, just shows a blank screen with the cursor flashing. It has nothing to do with booting. It doesn't show a single message, neither does it beep.
Fortunately, after a few to several restarts, it does start, but it is rather annoying and worrying.
Does anyone know what may be the reason behind this? Many things are possible of course, but somebody more experienced may have seen exactly the same behaviour.