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PC won't boot


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#1 Shawshanks

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Posted 28 October 2013 - 08:44 AM

Dell Dimension 4700 purchased 2004 with Pentium 4 running Windows XP Pro.  I used this machine for about 2 years, then it was placed in storage for 7 years.  Would not boot, so I replaced the battery on the motherboard.  But still doesn't boot.

When I press the power button on front to turn it on, the two green lights near the power button come on, the fans run, etc.  But the keyboard lights come on only for a second then go out.  The monitor does not come out of sleep.  Then, after a minute, one of the two green lights on the front of the tower goes off.  The machine just sits there humming with the fans going.  I can't do any setup or boot changes because nothing shows up on the monitor.  Thank you.



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#2 Roodo

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Posted 28 October 2013 - 10:47 AM

try resetting the bios by jumping the pins.
http://www.wikihow.com/Reset-Your-BIOS

#3 petewills

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Posted 28 October 2013 - 11:01 AM

You mention the 2 green lights at the front, presumably power on and hard disk activity, but what about the 4 diagnostic lights on the back, what colour are they, if any are displayed, yellow, green or white/off.



#4 Shawshanks

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Posted 29 October 2013 - 11:03 PM

The only lights I see on the back are lighted letters, A, B, C, and D.  A and B are green; C and D are yellow.  All four come on when I turn on the machine and they stay on.



#5 Shawshanks

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Posted 29 October 2013 - 11:10 PM

Also, the computer beeps when I turn it on.  There are 6 sort of slow beeps, the pause after the 2nd beep and the pause after the 5th beep are slightly longer than the others.  So, to clarify, when I press the power button, the green light for Power and the green light for hard drive come on, as does a green light on the front of the CD-ROM.  The green keyboard lights come on for about 2 seconds then go off and the yellow sleep light on the front of the monitor changes to green for only a flash.  Meanwhile the beeps are going on.  Then the green light on the CD-drive goes off, and the beeps finish.  
After about 10 more seconds, the green light for the hard drive goes off.  The only thing remaining is the green power light (and all 4 A,B,C,D lights on the back as mentioned previously).



#6 robomow

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Posted 30 October 2013 - 12:10 AM

Per the owners manual...................ftp://ftp.dell.com/Manuals/all-products/esuprt_desktop/esuprt_dimension_desktops/dimension-4700_service%20manual_en-us.pdf ....... for your machine direct from dells website if A and B are green.................D and C are yellow........

 

1. Determine if a conflict exists by removing a card (not a graphics card) and restarting the

computer.

2. If the problem persists, reinstall the card that you removed, remove a different card, and then

restart the computer.

3. Repeat this process for each card. If the computer starts normally, troubleshoot the last card

removed from the computer for resource conflicts (see your Owner's Manual).

4. If the problem persists, contact Dell (see your Owner's Manual).

 

I suspect since the computer has been in storage for a long time your probably should open the case and carefully reseat everything. Just carefully remove and reseat all the daughter cards and memory modules. You may have to do this several times.

 

Good luck to you.

 

I sincerely hope this solves your problem.






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