What does the computer do when you try to start it up? Any audible tones or beeps? Does the display come on? Does the OS seem to launch?
What else can you tell us about the computer and what specifically isn't happening when you turn it on.
It turns on slow with sceen slowly brightening. The only issue is that when I type that 6yhn pops in to what I am typing it can also all suddenly go darker and the window will become small