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HP compaq nx9420 refuses booting.?

by arred / March 5, 2010 9:19 AM PST

HP compaq nx9420 refuses booting.?
XP professional centrino duo 2 ghz and 1gb ram.Cannot boot in windows I tried linux it won`t boot, cannot boot in safe mode. Pulled hard drive connected another one, the same thing happens. Can only get to bios memory tester in bios showed test pass, won`t boot cds or usbs, so I can`t reinstall windows or format the disk, I`m out of ideas, any help?

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Slim details.
by R. Proffitt Forum moderator / March 6, 2010 5:43 AM PST

Since no error messages I take it the CDs never boot (USB too.) Many CD drives lose the boot capability as they age and we all know the Windows can get damaged and not boot but that's not a hardware issue.

When I see your story I know to pull out the shop USB DVDRW drive and try a boot from that. Some tinkering may be needed in the BIOS to do that which I won't cover here.

My guess is the machine is over a year old and needs at least a new DVDRW drive.

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HP compaq nx9420 refuses booting.?
by MysticalTux / May 27, 2010 3:50 AM PDT

Hey Arred,

Have you been able to resolve your problem?

I'm having the exact same problem. I've ran HDD and RAM checks, all passed. I've swapped new RAM chips with no lucj. No idea what to do next.

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Since the ideas presented here don't help.
by R. Proffitt Forum moderator / May 27, 2010 4:42 AM PDT

You may want to price out what this will run at repair counters and I found the USB DVDRW to be a cheap exit.

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by MysticalTux / May 27, 2010 4:54 AM PDT

Thx Bob,

Actually I found the problem. I was using a power supply purchased on Ebay. When I had the laptop plugged in, the CPU was sky rocking. Even in the BIOS it worked very sluggish, as soon as I pull the power cord out it responds normal. No wonder it was booting into windows for

Wrong voltage was being sent, which forced the CPU to low power mode.

I have to find an original power supply.

Thanks again,

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Chalk it up.
by R. Proffitt Forum moderator / May 27, 2010 5:40 AM PDT
In reply to: Boot

The advice in the forums for batteries and power is to stick with the maker's gear. But then again, some will try it and learn why this is the advice here.

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A Disk read error occurred(Press Ctrl+Alt+Del to restart)
by anwar_raaj / October 13, 2010 3:49 AM PDT

i am try to start our laptop,aftr on the laptop every time show te error A Disk read error occurred(Press Ctrl+Alt+Del to restart).pls comment required

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Re: disc read error
by Kees_B Forum moderator / October 13, 2010 3:52 AM PDT

Please start your own thread in stead of piggybacking on an unrelated one. You get much more attention then.


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I'd start a new thread.
by R. Proffitt Forum moderator / October 13, 2010 3:54 AM PDT

Also tell why a new hard drive didn't fix this?

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HP Compaq booting problems
by michelsmith / September 25, 2011 8:42 PM PDT


If the battery of the HP laptop is not in a good condition, sometimes booting problems might happen. To remove any static charges accumulated in the battery, you would have to remove the battery and press the Power button for about 25-35 seconds. Then reset the battery. Even after this, if your laptop is not booting up then you could perform the battery calibration and press F8 key to boot in safe mode.

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