Question

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My computer is not working (can't even get the BIOS)

By asher2jk ·
The Details.
Motherboard - Intel 865 series
OS - Windows 7 (installed it a week ago)
Processor - P4
RAM - 1.2 GB
HDD - 160 GB
Graphics - NVDIA FX 5500.

Okay can't think of anything else that you guys might require. So I installed windows 7, everything was running smoothly, I was happy :)
Then out of the blue it just froze with the HDD LED continuously on. I let it stay like that for 5-10 mts thinking maybe it would revive but alas!!! :)
I restarted it and my woes began.
It starts but it doesn't do anything. I don't get anything on the screen, Moreover the HDD LED is continuously stays on. Even if I remove the HDD it stays on.
Things I have tried:

All the other things I guess are working. the Lan Card, the optical drives. they all at least startup but I don't get anything on the monitor.
The RAM's working, I guess not sure. (I removed it from the slot and the MB makes beeps)
The monitor's working, again not sure (Removed cable from the MB, it show a self diagnostic message saying check the cable so I believe its working fine)
The HDD working. (Took it to a friends computer and it booted up fine)
So I am stuck with a desktop where I can't figure out what's wrong. I believe its the motherboard but I don't know what to do about it without getting anything on the monitor. Never faced this kind of a problem before.
P.s. I know its an old computer but its the only one I have right now :) Anything that avoids buying a new MB would be wonderful.
Thanks to all people who help :)
Also I don't mind tinkering around with the system.

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All Answers

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How Do I figure if the PSU is at fault

by asher2jk In reply to My computer is not workin ...

Smeg, how do I decide conclusively that it is the PSU that is causing all the fault.. I tried what you asked earlier.. Pressing the power button while it is disconnected from the mains.. It did not seem to do anything.. I mean I was back to square 1.
Is there any way to again conclusively decide that it is the motherboard at fault.
Martin, I checked the capacitors.. All of them seem to be normal.. None are bulging.
I am going to wait for a week before doing anything.. Maybe even take to it a technician rather than DIY :) but before doing that I want to make sure what is causing all this trouble.
P.s. since when did techrepublic start keeping a limit on the number of messages you can post?? Could not reply yest because of that.

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the only way to test a PSU

by .Martin. In reply to How Do I figure if the PS ...

is to attach another power supply to the computer, a power supply that is known to be working.

as for the question about posts, at least as long as I have been here, it just means the thread won't end up all the way to the left, resulting in a lot of scrolling (and possibly server overload)
if you want to continue posting after a question (like OH Smeg's last post) just go to the post before it, and reply to that one,, the new post will show up underneath the previous post.

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And any test for the motherboard??

by asher2jk In reply to the only way to test a PS ...

I would be able to get a new PSU in the evening only.
In the meanwhile I would like to see what is wrong with the MB. So is it possible to check it without getting the BIOS.
Yes I believe you are right about the post thing and the smart guy in me thought techrepuplic has put a limit to the messages one can post in a day :)

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Testing for motherboard failure.

by Ron K. In reply to And any test for the moth ...

Correctly installing a new power supply should show you if the motherboard is good or not. Without having a schematic that shows waveforms on an oscilloscope at different locations on components I know of no other way to test a motherboard.<br>
If there is another way I'd like to know of it too.

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I would like to know too. {NT}

by .Martin. In reply to Testing for motherboard f ...
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Maybe a POST Card may be useful here

by OH Smeg In reply to Testing for motherboard f ...

These plug into a Socket and display a Code when the system is turned on telling you what is going on here.

Not sure if it would help or not but I couldn't live without my POST Card.

As for other M'Board testing it's not really an Economic Option as the Board Makers sit their Boards in a specially designed pad which takes the readings directly off the solder points on the back of the board.

Real people can not afford to have things like that. So if there are no visual signs of damage not much more you can check here. But if you have a Multi Meter you could chase Voltages all over the M'Board from the Plugs if you like. Will not tell you much but it will consume a lot of time. :0

Col

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Oh yeeeaaaahhh! A POST card.

by Ron K. In reply to Maybe a POST Card may be ...

I forgot all about those and I've looked at them off and on for years. That makes me wonder what else I've forgotten. :0

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to count?

by .Martin. In reply to Oh yeeeaaaahhh! A POST ca ...

I sometimes forget that, along with what day of the week it is

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wasting time

by .Martin. In reply to Maybe a POST Card may be ...

that's a good use, but I will probably end up killing my MB...

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Was wondering

by asher2jk In reply to wasting time

If it could be the CMOS battery.. Its been 6years since I got this MB.. A friend here asked me to change the Jumpers next to CMOS battery.. think it would help??
As for the POST card, well never heard of it and the way you guys described it I think it would be difficult to get hold of it :)
A multimeter seems a viable option but how would I know the correct voltage :)

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