 Pc Power On Issue |
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 Jan 13 2008, 11:55 PM
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New Member  Group: Members Posts: 5 Joined: 12-January 08 Member No.: 182,884  |
This post has been edited by goon29: Jan 13 2008, 11:57 PM |
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Jan 14 2008, 10:38 AM
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 Distinguished Member Group: HJT Senior Classmen Posts: 712 Joined: 12-July 07 Member No.: 143,145 |
Sounds like you may have a bad switch. If you could open up the case, you should see on the motherboard (usually in ther lower right of the board) a set of pins. The ones for the Power On, Reset, HD LED and Power LED. Often, they are marked right on the board but sometimes you need to look at the manual.
Find the ones that are attached to the front panel power switch. Remove them from the 2 pins and then short the 2 pins with a small screwdriver blade. Hold it just until the fans start spinng, then you can remove it. Your computer should power up. If it starts, you probably have a bad front panel switch. If it doesn't, you need to get your power supply tested. If you have a spare power supply that you can use and substitute, that is good. You should be able to find the problem through a process of elimination. I am not sure what "Green Wire" you are speaking of. From the power supply? Or the motherboard? Like a Ground wire? Good luck. DR -------------------- |
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Jan 14 2008, 04:46 PM
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 Hardware Guru Group: BC Advisor Posts: 1,872 Joined: 25-January 07 From: Tiffin, Ohio Member No.: 108,353 |
The green wire he is referring to is the /PS_ON wire when you push the power button the motherboard shorts this wire to ground.
-------------------- ~Chad~ Biostar P4M900-M4, Celeron 2.7GHZ OCD 2.95, 2GB patriot DDR2 667 CL3, 60,20 GB IDE HDD,2 Dell 19" Flat Panel monitors, XFX 512mb OC'd Geforce 9500, Windows XP Professional SP2, SAS, MBAM, MCAFEE STINGER, Zonealarm, Linksys Router, and A Modded Palm TX HandHeld. |
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Jan 14 2008, 06:35 PM
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New Member Group: Members Posts: 5 Joined: 12-January 08 Member No.: 182,884 |
QUOTE(Sneakycyber @ Jan 14 2008, 04:46 PM)  The green wire he is referring to is the /PS_ON wire when you push the power button the motherboard shorts this wire to ground. Exactly. I'm thinking of just getting an on/off switch and hardwiring it in here. Any idea why the mobo would have stopped doing this? |
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Jan 14 2008, 06:54 PM
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#5
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Hardware Guru Group: BC Advisor Posts: 1,872 Joined: 25-January 07 From: Tiffin, Ohio Member No.: 108,353 |
Did you try shorting the contacts on the MB?
-------------------- ~Chad~ Biostar P4M900-M4, Celeron 2.7GHZ OCD 2.95, 2GB patriot DDR2 667 CL3, 60,20 GB IDE HDD,2 Dell 19" Flat Panel monitors, XFX 512mb OC'd Geforce 9500, Windows XP Professional SP2, SAS, MBAM, MCAFEE STINGER, Zonealarm, Linksys Router, and A Modded Palm TX HandHeld. |
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Jan 14 2008, 10:15 PM
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#6
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New Member Group: Members Posts: 5 Joined: 12-January 08 Member No.: 182,884 |
Yep, that didn't work. Strangely enough though, if I hotwire the green wire to the chassis to get the machine running, and press the power button, it attempts to shut down. Weird.
I did notice that the fan in the PS is not running. Might this be a PS issue? I am getting 12v and 5v readings from the leads. |
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Jan 14 2008, 10:28 PM
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 Computer Masochist Group: Moderator Posts: 10,660 Joined: 27-January 07 From: Cleveland, Ohio Member No.: 108,618 |
QUOTE(goon29 @ Jan 14 2008, 10:15 PM) Yep, that didn't work. Strangely enough though, if I hotwire the green wire to the chassis to get the machine running, and press the power button, it attempts to shut down. Weird. I did notice that the fan in the PS is not running. Might this be a PS issue? I am getting 12v and 5v readings from the leads. It certainly isn't a good sign, If the fan isn't working, it needs replaced Mark -------------------- Mark
 why won't my laptop work? Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around Avatar by Handplane |
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