Hp pavilion monitor go's black after boot screen

when i start my pc the boot screen will appear on the monitor but after that it go's black. i can hit one of the f keys to take me to the boot page or diagnostics page but when i change the boot path and hit save then enter it just go's back to the black screen i have also hit the f9 key to go to the diagnostics page and ran the on board hp diagnostics tool which says everything has passed when i try to go back the screen go's black again! at first i thought it was a graphics card issue so i replaced the old one with a new one same thing, i also tried plugging into the three different slots on the graphics card i started with the dvi slot with an adapter on my cable it will not even show the boot page it just go's strait to no signal so i switched to the VGA slot that's were i can get to the boot screen, last i tried the hdmi port and again i can get to the boot screen but then it go's black i removed the ram and cleaned it, and was going to try and go strait from the mother board to the monitor but i got scared when i saw the black cap with the words DO NOT REMOVE on it! i have tried 2 different monitors just to eliminate that probability but now I'm just lost any ideas would be appreciated!
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I think your right i'm thinking the hard drive to, thanks for your reply!

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Hi everyone,
I've got problem...when I boot up, I can hear strange noise which comes out from the laptop fan. It sounds like a loud buzz or something like that and appears only after boot up and lasts approximately for 2 minutes, then disappears.
I've already tried to clean the fan with air compressed can, but with no luck. Then I completely disassembled the laptop, unscrewed the fan and heat sink from the motherboard, cleaned it and replaced the thermal grease on the CPU and GPU. Despite of that, the noise appears again.
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What should you do?
Whatever you want, I personally sold the laptop for 700€ and bought the cheapest new Asus 15” dual core laptop I could get for 300€ and you know what... it s working great for a year and a half now and most important ... QUIET so much that I didn’t hear it even once for now even when watching HD movies or doing a 3D games, and I really mean it NO SOUND AT ALL! …
Happy forever, but it was a great lesion for me with HP Pavilion "quality" products.
P.S. One another thing, build quality is even much better at laptop for 300€ not to mention the Pavilion for 700€ where all the so called chrome decorations almost fallen off,the DVD tray or slot had strange alignment to the whole laptop (little bit cranny) and so on…. Bottom line it’s too much fragile.
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Hi,
Open windows Control Panel, open Pesonalization, click the Screen saver link in the bottom right and in the following window, adjust the time in the 'Wait' box to a time you want before the screen saver appears and click Apply. Or if you prefer never to get the log-on screen, remove the tick next to 'On resume, display logon screen'. Click Apply to save the change.
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hi saddamali111,
Welcome to Lenovo Community Forums!
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Hp pavilion monitor go's black after boot screen

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