Question about HP NB199UA Pavilion Notebook

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My hp Pavillion dv4 will not boot. For a while it has been having problems waking up from hibernation mode. I always did a hard restart and after a while it would boot back up normally. I have had problems with the fan and heat sync in the past, but at the moment they are both cleaned and free of dust. When I press the power on button, the quickplay bar lights up. The capslock and numberlock buttons also flash. There is a noise from the CD/DVD rom that indicates that the computer is trying to boot. There is no sound from the hard drive, however. The computer does not turn off and just stays in the mode of trying to boot without being able to. The screen is completely black (no flashing bar at the top of the screen) and will not run BIOS. Is this a hard drive problem or something else?

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  • eringi Jul 29, 2010

    Damilare,
    Thank you so much for your reply.
    I tried the things you suggested.
    There is still no change from before.
    Even with the harddrive out the screen remains black.
    Could it be a problem with something else that is not the harddrive or the RAM?

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  • 358 Answers

Hello,
Even though a lot of things might have gone wrong and caused this,
But I will try and tell you some troubleshooting steps that you can try.
First of all, disconnect your battery from back of the laptop, and try to power your laptop without the battery there, if it powers up, then just get a new
battery.
Second, get a screw-driver, remove all the RAM(memory sticks) at the back of it, clean their interface with an eraser, and try to power it on first without
them, then replace them back and power it on.
Alternatively,
Remove all your RAM(Memory Sticks), and clean the tip of the connector with an eraser, and re-insert it one after the other.
That is, if you have two of them, after you insert the first one, put on your system and see if it works, then do the same thing with the other one.
If the two of them works, them insert the them all. but if it is just one that worked, just remove the other one that is not working and replace it.
Also from what you have just said, I suspect that your hard drive is likely to be corrupt, or having a bad sector on it.
To be sure of this, disconnect your hard drive from the laptop, and power it up without connecting the hard drive, if it boots up to the point where it says:
"Operating System Not Found" or "No Bootable Device Found", then that shows that your hard drive needs replacement
Kindly Let me know how it goes.
Hope this helps.
Goodluck!

Posted on Jul 29, 2010

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