Monitor goes black after start up

Hi! My computer goes to a black screen when I start it up right after it shows the windows xp is loading it turns black then a flash of purple light comes then it goes black again but I try moving the mouse and I see the pointer on the black screen.

I don't know what the problem is because last night it was working, we just installed a game and it was working good, the problem started when I turned it on this morning.

I need help.
2 answers Last reply
More about monitor black start
  1. Have you tried booting into safe mode by pressing the F8 key during boot up to see if the display works in safe mode?
  2. thanks my pc works now.
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