My computer screen just flashes, please help!?

Joel B

New member
So when I turn my computer on, the screen doesn't stay on, it just flashes for about 1/2 of a second. It starts up fine, but it wont stay on. When I shut the monitor off and turn it back on, it does the same thing, stays on for a 1/2 of a second, and then goes black. I can read in the upper right hand corner of the screen the word (analog). I have a HP s5120y, with a LG flatron W2061TQ screen. Please help. Oh yeah, and I have tried shutting the whole computer down and turing it back on, it doesn't work.
 
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