Question about HP Pavilion dv4000 Notebook

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PC Won't Power Up

NOTE: I am new to this site and couldn't find the right model for HP. Mine is a desktop PC, HP Pavilion a475c.

We got a "hard drive is bad" error. I did a standard restore which seemed to work until I shut it off and then it came back with the same bad drive error.
I replaced the hard drive with a Western Digital 3000 40-pin conducter. At that time I took out the battery also. Now the pc will not turn on. I took the hard drive back out and put it in a case and I could access it. I unplugged everything including the power cable, held the power button for 5 seconds, switched the red power supply from 115v to 230 and left it for 5 seconds and then switched it back. Still nothing. The green light in the back is flashing. I'm out of troubleshooting ideas. Help!

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  • Skids Nov 26, 2007

    I have the same problem with a Pavilion Notebook. There is likely a "system off" (reset) button on back of notebooks that you can push with a pen tip to reset. That usually works. I have the same issue on a Dell Notebook model that does not have a rest button. The last time around I removed the memory modules and the drive, and stripped out all other removeable hardware, then checked for power and fan coming on. After power and fan running, I re-installed all the hardware and it seemed to clear it all up. From what I see, most notebooks with Intel motherboards has a reset button on the back side.

  • Anonymous Sep 27, 2008

    freezes on boot, the only way to fix it is to wiggle the display! strange...



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I'd guess the problem is either the hard drive connector in the bay (trying putting in the original drive and seating it very solidly) or else the motherboard hard drive controller (rare problem). You can diagnose which of these it might be by putting the hard drive back in and then booting into the BIOS (F10 or delete at boot up) and then investigating whether the hard drive is being correctly identified by the BIOS. If it is, run any tests or AUTO options it has to see if the BIOS can contact the drive properly. Then, step through the BIOS settings and try turning on and off settings like SMART FOR HARD DRIVE and so forth and rebooting in cycles after every change. It is also possible that with the power problems you've described, the BIOS got reset and may need tweaking to get it working again. If you see evidence t might be a BIOS reset problem (for example, the system clock is crazy wrong), try to LOAD SAFE DEFAULTS AND EXIT option in the BIOS. If you test it all this way and find no problems, and you can access the drive normally on another machine, it is probably the motherboard IDE controlled. Will it boot from a CD/DVD? They are usually on the same IDE channel and so failure to boot from a CD tells you something is wrong in the hardware.

Good luck...

Posted on Nov 16, 2007

  • RIchard Wheeler Nov 16, 2007

    PS: "Hard drive is bad" doesn't in this case actually mean the HD is bad, only that the BIOS could not communicate with it.



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