Computer won't boot up

Hewlett-packard Pavillion dv8000z notebo...
January 3, 2010 at 23:52:15
Specs: Windows XP
At first my computer started showing strange red lines on the screen
while playing an MMO. Both times this happened the computer froze
completely and I had to reboot (couldn''t CTRL-ALT-DEL even). After
the second time the computer would not boot up again.

Now it does not even show the "HP" BIOS screen when I turn it on but
it does make the usual whirring sound and the LED lights come on. I
tried plugging it into an external monitor to see if my monitor had just
died (no luck). When I try to use a Linux disc to boot with it makes a
sound like its trying to run it, fails to then repeats these sounds every
20 seconds or so (like it keep trying to and failing). I tried moving the
RAM modules around and using different RAM entirely. Finally, I
opened her up, took apart pretty much everything including the CPU
and CMOS battery and put it all back together and it still does the
same thing. Any help is greatly appreciated!


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#1
January 3, 2010 at 23:58:25
Obviously you have tried with the battery out (as its not needed at all to POST)

I'd try with 1 Ram card only, or even with the Hard drive fully removed

There's lots of basics like unplug all external connections
And hold down the ON button with all power out (to disperse voltage)
Plus also re-seat and re-paste the CPU and Heatsink
But I'm thinking you must have tried all of these already


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#2
January 4, 2010 at 16:49:56
Yes I tried all the things you mentioned except for holding
down the power button which I just tried now. Anything else I
could try?

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#3
January 4, 2010 at 19:26:25
You could try taking it apart again
But this time do not connect the screen
And then try using an external monitor

If it were mine I'd probably fully disassemble it
And then spray electronic circuit board cleaner all over it
Wait a day for it to dry, then re-connect the CPU and Ram etc
And test (still outside the case) again
This is known as Benchtesting it

It could also be a faulty CPU or Mobo, but I'd still try the Benchtesting first


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Related Solutions

#4
January 4, 2010 at 20:58:15
Ok thanks. I will try that.

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#5
January 5, 2010 at 21:35:15
I tried it with an external monitor with the laptop one detached
and I got it to boot! (sort of) It shows the HP bios screen and
it starts to load windows but then it gives a blue screen error
saying there is something wrong with the hard drive and it
says to run chdsk /f. The problem is that I can't run that
without doing it in windows. Is there a way to do it in ubuntu?
also, the screen it still flickering with wierd streaks even with
the new monitor.

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#6
January 5, 2010 at 22:00:57
Good news :)

Note you don't need Windows to run CheckDisk
You can run CheckDisk in the Recovery Console

To access the Recovery Console, boot from any XP CD
Or download this Recovery Console ISO file and burn it to CD http://www.thecomputerparamedic.com...

Running Checkdisk from your Windows Recovery Console
* Boot from your Windows Setup CD
* Select the first R prompt, to log into the Recovery Console
* Press 1 then Enter
* Then type: chkdsk /r then press enter
* Once finished, type Exit, then Restart


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#7
January 7, 2010 at 14:36:31
Along with the flickering screen it keeps crashing so I had to
run chkdsk several times to get it to finish but now I can get
windows to run. Also, my laptop monitor works now!
Unfortunately, the crashing is so bad I still can't really use the
computer. This has been happening while I was using the
recovery disc and ubuntu so it's not the hard drive. I bet the
crashing and the glichy screen are both cause by the same
bad hardware. It's not the HD, battery, disc drive or ram
because I've tried running it without them (or for the ram using
differerent modules) and it still does it. Is there anything else
that could be causing it besides the CPU or motherboard?

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#8
January 9, 2010 at 21:02:47
Any ideas how I could see if it's the CPU or motherboard? I
have a desktop computer with an older CPU so I could test
that CPU in my laptop. I've never replaced a CPU before. Is
it safe to just swap a new one in? Anything I should be aware
of? They are both by intel.

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#9
January 10, 2010 at 17:17:30
Desktop CPUs are generally not interchangeable with laptop (Mobile) CPUs. They often run at different voltages.

Goin' Fishin' (Some day)


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#10
January 11, 2010 at 19:05:56
Any other way to know whether it's the CPU or the monitor?

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