no power up

Compaq / 5bw131
February 16, 2010 at 11:57:05
Specs: windows xp, 983mb's of ram
had a power outage, and now, puter will not do anything. checked power plug, tried new power cord, reset power switch on puter. what else can i check to try and not go to technician?

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#1
February 16, 2010 at 12:28:30
Thx for PM - not sure if I can help on this one but perhaps you can spell out the symptoms a little more.

Is it "completely dead", ie no lights or fan noise or signs of activity? If it does anything at all (however minimal) it might give some clue about where to start looking for the problem.

some other bloke...


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#2
February 16, 2010 at 12:30:24
Is that a laptop or Desktop computer ???

My desktop, a while back, made a loud pop sound. Then was dead. I presume the Power Supply has burned out. I know electronics, but no time yet to check out.
As for you, your limited knowledge would be rather hit and miss.
Was the computer plugged into a Surge Protector (a must)???

http://www.howstuffworks.com/power-...
How PC Power Supplies Work


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#3
February 16, 2010 at 14:50:48
it does nothing. no lites, no sounds, or anything. it was not plugged into a protector. no lightening, but a snow fall, and power went off about 4:30 am. all i do now, is take side off and look, but do not know what i am looking at. just trying to get idea on what to look for.
oh, it is a desktop.

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Related Solutions

#4
February 16, 2010 at 15:55:02
Well at least that confirms it is definitely a hardware failure, rather than the surge causing a software glitch. If you are lucky there might be a fuse tucked away somewhere - possibly inside or near the PSU.

Otherwise it ranges from PSU > CPU > Mobo failure, which leaves things wide open. A multimeter on the PSU (input & output) is probably the best first step but you will need to find out what voltages to expect. If it comes to it maybe your local repair shop would test the PSU for you.

Let's hope there are some more focussed ideas forthcoming from others.

some other bloke...


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#5
February 16, 2010 at 16:58:41
i did see something about a fuse, but have not enquired as to where. i will try that next.

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#6
February 17, 2010 at 22:39:09
Look outside and inside of your power supply for a reset button or a fuse, I don't know of anywhere else it might be.
For the future, I recommend at least a surge protector, but I definately prefer a UPS instead. An Uninterruptable Power Supply includes surge protection against high voltage spikes, but also includes a battery powered protection against voltage drops (almost as dangerous for computers), and in the event of a power failure, it gives you 10 or more minutes to save your work and shut down properly (some have software that can do a proper shutdown if unattended for a specified amount of time).

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#7
February 18, 2010 at 14:50:39
i did not see any reset buttons or anything. i wound up calling Best Buy, and they could check power supply at no charge. they told me power supply was bad, so, i bought a Dynex 400 W unit, (they reccommended). come home and boy, the wires. there were plugs i did not even recognise. put the ones that appeared the same plug where that plug was from the older unit. did not even bother where to put things i could recognise. guess it was ok, for the computer now comes on, and i can get online to surf. the only thing i can see now, is the button that opens my cd tray does not open. i can go to my cd drive on MY COMPUTER, click eject, and it opens. it plays cd's also. uninstalled, and reinstalled drive, unplugged the wires, and updated drivers, but none helped. i will keep looking for an answer. by the way, HP wanted $149.95 for a replacement supply unit, and Best Buy had a Dynex for $49.95. don't make since to me. anyway, it is working now....thanks.
can you give me info on the surg protector i might could check on? is the stick plug with multiple plugs what you mean?

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#8
February 18, 2010 at 15:03:07
Re your CD eject.
Having just replaced the PSU I would normally expect wiring. However, the fact that Eject works from Windows makes that seem a bit unlikely. Have you got another CD unit you can try as (from what you said) the eject button seems the most likely problem?

I expect the surge protector on a multi-way socket strip is what was meant. I don't think they are particularly wonderful, but better than nothing I suppose.
It could be worth googling around for surge limiter specifications.

some other bloke...


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