Dv4-2040US blinks 1 time every 3 seconds Black screen

Have a black screen Cap lock has contiuous blink once every 3 seconds. Any thoughts?

Hi
1 blink is CPU Failure please find the link given below for more details.
Blank Screen LED Error Codes
Let us know how it goes!
"I work for HP."
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Regards
Manjunath

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_*Satellite x200-191*_
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Ok so I left the laptop after a couple of months, being told it was dead, just getting it dusty. (Read history to get this)
But since last week, I figured its getting dusty, I never opened a laptop before, why wont I try doing that.
_+*I replaced the Memory modules, Slot A and B , both memories , same time, one at a time, all possible ways.*+_
_+*Since I have only 1 HDD, I used it in both slots. Looks to no difference. Using NO HDD, I do NOT have the very tiny minor humming sound!!!*+_
I followed a guide [http://www.irisvista.com/tech/] to open my laptop, to see what is inside.
Finding no lose plugs, but did find a certein oil, and some white paste.
Closing the laptop, to try it out, I accidently screwed a couple wrong screws in the laptop, piercing the top cover of my laptop, but no chips were hit during this :P (Yeah, Im a bit to strong, I should have figured using force for a couple of the screws wasnt the best thing I could do, but now i know :p)
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I bought the laptop at Shape Computers (in the netherlands) Asking this laptop mentioned above, with 2 things changed. I wanted more Memory, and I wanted windows XP. The shop told me this was possible. They bought me the laptop in, they replaced the Memory with the kingston memories. They installed windows XP instead of the Vista. They laptop did work at this very moment. So I bought the working laptop, with 1 year warranty.
With the folders extra given with the laptop, I was able to increase my warranty from 1 to 2 years for free, so I did.
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Knowing something was wrong, I took it back to Shape Computers. They checked it. (Not showing me what they did to it) But they told me I had nothing to worry about.
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Funny information(not for me), during this period of about 8 weeks, they actually told me lies like ... I left a message at your voicemail, I DONT HAVE A VOICEMAIL ... sorry for the caps but im still xxxxxx about those lies.
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I might pay a bit more at my Dell computers, but the support in the last 8 years with 5 different computer systems and 1 laptop. Has been perfect in compare to the toshiba support I have gotten in the last 3 years, which just fails.
Thx tho all you guys for the replys.
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As per Blank Screen LED error code, it indicates CPU or motherboard itself has gone faulty. You can find more info at below link
https://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&tmp_track_link=ot_recdoc/c01442956/en...
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Dv4-2040US blinks 1 time every 3 seconds Black screen

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