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Old 06-18-2003, 08:06 AM   #1 (permalink)
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Lightbulb Not powering on or off correctly!

Hi people

I built a computer from scratch (specs below)

- AMD Athlon 1.4 gig
- 256 DDR ram (2100)
- Chaintech 7kjd motherboard - latest bios
- SBPCI 128
- Geforce 3 ti200 (64mb)
- Win98 2nd Ed / mandrake linux 9.1

Absolutly everything is fine except 1 (or 2) major thing.

- When I shut down windows the computer doesn't properly switch off. Windows has 100% shut down but the computer remains on some kind of standby mode, the fan remains on and the hard drive keeps spinning (the ide lights are still on)....

Also When I turn on the machine I have to switch the power switch at the back press the power button at the front then quickly turn the switch at the back off then on very quickly !!! It's the only way the computer will boot!

If I just turn the switch at the back on then the switch at the front (i.e like a normal computer) the drive lights turn on but there is no display (or beep)

It resets / restarts fine .

It's not os related, the same thing happens with linux and windows, It doesn't seem to be a bios setting either.

Can anyone help please???
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Old 06-18-2003, 08:46 AM   #2 (permalink)
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Sounds like the powermanagement of your mobo is not quite correct... The APM should stop the power and start it when you turn the switch...
I'm not sure.
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Old 06-18-2003, 10:02 AM   #3 (permalink)
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Also try this: Make sure the switch at the back is in the on position, then press and hold in the front power button for 5-10 seconds and see what happens.

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Old 06-18-2003, 11:45 AM   #4 (permalink)
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you need to change things one by one until you find the problem.

1. make sure you do not have the power and reset wires REVERSED (from the case to the motherboard).
It would be a good Idea to check ALL of your connections to the mobo...sometimes it makes a difference if you have even the polarity reversed. Use a nice big magnifying glass and a flashlight to check all of the mobo connections.

1. check your power setting options in your bios. Usually there are options to controll what happens when you hit the power button.

Once you have eliminated these as sources of the problem then we can try something else.
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Old 06-25-2003, 01:13 PM   #5 (permalink)
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DreamCaster, when i hold down the powerbutton for a few seconds it sort of shuts down (it shuts down in the same way that it does when i shut down from windows, ide light still on etc.

LPDad what do u mean 'change things one by one until you find the problem' . do u mean the led wires?

Thanks for responding so quickly

C ya
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Old 06-25-2003, 01:30 PM   #6 (permalink)
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The "holding the power button for 4 seconds=OFF" should be a setting in your BIOS (you should also be able to change it to "holding the power button=SLEEP" or something like that.

Sorry if I was a little confusing. Once you made sure all of your wire connections from the case (power, HDLED, RESET, etc) are connected correctly to your motherboard (make sure they are not reversed...sometimes this will cause problems) then you can go into your bios and make single changes to see if the changes work, THEN you should go into Windows (power options) and check/change your settings there.. What I ment was to make your changes one at a time, otherwise you might get things all messed up and you won't know what you did.
If you make one change at a time then you will know what works, and what makes it worse.

I do not know about LINUX and how it controls shutdown, I only know windows...XP (once I switched over to xp from 98 I promptly FORGOT how to make 98 work..LOL)
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Old 06-29-2003, 05:23 PM   #7 (permalink)
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I've encountered problems like these many times and on most cases, I was able to trace them to improper placement of the front-panel connectors. May I suggest...

1. Restore default settings on your BIOS.
2. Using the divide and conquer method as has been suggested, connect the front panel connectors one by one. On most cases you will find these

a. power sw
b. power led
c. reset sw
d. hdd led
e. speaker

You only need the power switch to get your computer running so remove the rest of the connectors and start with the "power sw" _only_ and try to power up your comp. If nothing happens, reverse this connector and try again. In an event that your comp does not start up, refer to your mobo manual to ensure that this connector is in the right place. In many cases, I've seen discrepancies in the manual diagram and labels used on the mobo itself. If this is the case, follow the one on the mobo.

Repeat the steps in the paragraph above adding _one more_ connector until you will have placed all the connectors and hopefully, your problem will have been solved.

Cheers!

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Old 06-29-2003, 06:36 PM   #8 (permalink)
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Did you get things working lets-eat-gary???

If so what was the problem and how did you resolve it??
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Old 06-30-2003, 10:43 AM   #9 (permalink)
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I ran across that problem yushy on the asus board I just put together. The wiring diagram was differant from the MOBO and gave me some problems I just had to follow the MOBO instead of the manual. So I think this may be his problem as well.
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Old 06-30-2003, 02:09 PM   #10 (permalink)
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Problems like these are very common for folks whose job is to put together systems or repair them. Minutes before I wrote my reply yesterday, I ran across one and had to use the "divide and conquer" method to solve it.

-- y

Quote:
Originally posted by Drakin316
I ran across that problem yushy on the asus board I just put together. The wiring diagram was differant from the MOBO and gave me some problems I just had to follow the MOBO instead of the manual. So I think this may be his problem as well.
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Old 12-23-2003, 04:07 PM   #11 (permalink)
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I had a sort of problem like that recently the machine would power on properly but it would not shut down got to find out that it would bsod when shutting down and automatically reboot..
my .02c
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Old 11-05-2005, 10:32 PM   #12 (permalink)
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If you're looking for a diagram to dispatch the mobo connectors, see here, page 12 (CN12):
http://www.chaintech.com.tw/download/7xMB/7AIA5.zip
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