I'm afraid to ask......

  • Thread starter Thread starter JMac
  • Start date Start date
J

JMac

I have an ASUS A7V133, a real work horse in my network. Tonight I added an
additional harddrive. When I plugged the power cord into the supply the LED
on the motherboard didn't light up. When I pushed the power button on the
front of the case the fans didn't spin and the computer didn't boot.

I've tried this with 2 working power supplies with the same result (the
first PS is only a week old).

Any thoughts what this problem might be?
 
Check the cable that connects to the power on button the the motherboard
(may have come loose when you put the hd in),
 
Check the cable that connects to the power on button the the motherboard
(may have come loose when you put the hd in),
Click to expand...
Yep, checked that.

Even if it were loose/disconnected the LED would (should) light up on the
board.

Thanks for the suggestion.
 
Probably an obvious question, but did you try disconnecting the new drive?
Click to expand...
Good thought.

I have just the main power plugged into the motherboard and nothing else,
no hardrive CD-R, floppies, nothing. If the PS were good I'd expect the
motherboard LED to light up if nothing else, even if the case switch is bad.

No power no LED light.

I'm stumped (or is it stupid?)
 
Good thought.

I have just the main power plugged into the motherboard and nothing else,
no hardrive CD-R, floppies, nothing. If the PS were good I'd expect the
motherboard LED to light up if nothing else, even if the case switch is bad.

No power no LED light.

I'm stumped (or is it stupid?)
Click to expand...

You should have as a minimum a processor and memory in your motherboard
(as well as a video card). Perhaps you do - but it is not clear from your
post.

I've heard Athlon boards can be finnicky (sp - it is K7 correct?), and you
may need to reset your bios (either with jumper or by removing the battery
for some amount of time) - check the manual for details.

There's always the possibility that ESD damage occurred during your
"upgrade"...

Double-check that:
1. power switch jumper is properly connected to motherboard
2. atx supply is completely and correctly plugged into motherboard
3. switch on the back of power supply is set to on (1 not 0)
4. power supply is set to 115V position (if in USA)
5. power is live on your surge protector (outlet you plug into)
6. power cord plugged from surge protector to power supply...

--
We HAVE been at war with Iraq for 13 years now, bombing their
country on at least a weekly basis.
"U.S.-led sanctions have killed over a million Iraqi citizens,
according to UN studies" - James Jennings
3,000+ innocent Iraqi civilian casualties can't be "wrong"...
 
I have an ASUS A7V133, a real work horse in my network. Tonight I added an
additional harddrive. When I plugged the power cord into the supply the LED
on the motherboard didn't light up. When I pushed the power button on the
front of the case the fans didn't spin and the computer didn't boot.

I've tried this with 2 working power supplies with the same result (the
first PS is only a week old).

Any thoughts what this problem might be?
Click to expand...
Well, it's a pita but pull it out of the case and prop it up on some
cardboard. Just MB, Video card, memory. Try a PCI video card?
 
when pulling the power plug out of the back of the PS did you inadvertently
bump the main power switch on the back of the PS
 
Also check

1) the dip switch on the power supply
2) make sure the power supply is not plugged in backwards
3) Test the power supply by shorting pins 13-14 which should case it to turn
on if its good. http://www.7volts.com/atx2.jpg for a diagram
 
From: "David" <[email protected]>
Newsgroups: alt.comp.periphs.mainboard.asus
Sent: Tuesday, January 27, 2004 12:08 PM
Subject: Re: I'm afraid to ask......

Also check

1) the dip switch on the power supply
2) make sure the power supply is not plugged in backwards
3) Test the power supply by shorting pins 13-14 which should case it to turn
on if its good. http://www.7volts.com/atx2.jpg for a diagram
Click to expand...
David,

Thanks for the link to 7volt. The test, shorting pins 13-14 on the power
supply, was an excellent suggestion. I've always wondered how to test them.

Good news it that the power supply works, the real bad news, if I'm to
believe the tutorial at http://www.7volts.com/troubleshooting.htm , is that
my motherboard is toast. Seems odd that by adding a hardrive the board would
go bad. I didn't even have to touch the board. I rearranged the order of the
drives in the case so the ribbon would reach in a master/slave setup.
Plugged the ribbons and power into the backside of all harddrives & CD
drives, fairly straight forward, I thought.

I'm still in denial so I'll try some more of the posted suggestions, while I
pray to the silicon gods!
 
JMac said:
From: "David" <[email protected]>
Newsgroups: alt.comp.periphs.mainboard.asus
Sent: Tuesday, January 27, 2004 12:08 PM
Subject: Re: I'm afraid to ask......



David,

Thanks for the link to 7volt. The test, shorting pins 13-14 on the power
supply, was an excellent suggestion. I've always wondered how to test them.

Good news it that the power supply works, the real bad news, if I'm to
believe the tutorial at http://www.7volts.com/troubleshooting.htm , is that
my motherboard is toast. Seems odd that by adding a hardrive the board would
go bad. I didn't even have to touch the board. I rearranged the order of the
drives in the case so the ribbon would reach in a master/slave setup.
Plugged the ribbons and power into the backside of all harddrives & CD
drives, fairly straight forward, I thought.

I'm still in denial so I'll try some more of the posted suggestions, while I
pray to the silicon gods!
Click to expand...

Also try disconnecting the front panel reset switch - these can cause
your symptoms if they get jammed on. If all else fails, pull the board
and run it on a piece of cardboard before condemning it.
 
We can make a long list of possible reasons for failure due
to insufficient information. You don't have all day wildly
speculating, don't have the money to replace every computer
part, and should not have the patience for any procedure that
does not step you, logically, right to the problem. Some
previous suggestions are questionable anyway. You only added
a hard drive.

Nothing can be diagnosed accurately until power supply is
verified. That really means power supply, motherboard control
circuits, power switch, and all related wires and connectors
using what any good computer repairman uses - 3.5 digit
multimeter. Procedure to test this 'system' is simple;
described in "Computer doesn't start at all" in
alt.comp.hardware on 10 Jan 2004 or
http://tinyurl.com/2t69q

Procedure takes minutes, does not complicate system by
swapping or removing more components, and either reports PSU
totally good or bad. After power supply is declared good,
only then do you move on to the other suspects.

BTW, did you remove power cord before adding or removing any
equipment? If not, then you were working on a system that was
electrically powered; reasons for more damage. First -
without wasting time and threatening component life - use that
procedure to confirm integrity of PSU system (not just PSU).
Never start fixing things by wildly replacing components.

Should a new power supply be necessary, then learn from
another discussion: alt.comp.hardware.pc-homebuilt
newsgroup entitled "GOOD powersupply for under $40?" starting
21 Jan 2004.
 
In amongst all this, you havn`t mentioned you have guranteed mains power to
the power supply.


(e-mail address removed)

(e-mail address removed)
 
Also try disconnecting the front panel reset switch - these can cause
your symptoms if they get jammed on. If all else fails, pull the board
and run it on a piece of cardboard before condemning it.
Click to expand...

OK, I'm a dumb shit!

When I rearranged the CD & harddrives I pushed the CD drive into a capacitor
bending it! I didn't see this till I removed everything and placed the mobo
on a sheet of cardboard. I gingerly bent the capacitor back in place and
VIOLA it works!!

Thanks to everybody who had a suggestion, especially P2B cause I was about
to scrap my ol A7V133.
 
Back
Top