Another A7N8x which doesn't boot

  • Thread starter Thread starter ScienceBaron
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ScienceBaron

A couple of weeks ago I left a message on this board abut my A7N8X failing to
boot. A couple of you were king enough to make a few suggestions. in short,
when fitted with an XP 2200+ and all the other items to make a new computer,
the board would not boot. Eventually I stripped it down and took out the cpu.
Only at this stage did I get a message - not cpu found. I put it back together
bit by bit, but got no messages and no boot.

So I sent the board back and got a replacement. I now have it and have
installed a Duron 1800 this time. Still no boot. so I changed the power unit.
Still no signs of life other than the green board led which lights up and the
fans run. I can't hear the hard disk start, but there is a led light on the CD
disk.

I feel like chucking this board in the bin. I have never had this sort of
trouble before.

Any help will be very gratefully received.

DC
 
So I sent the board back and got a replacement. I now have it and have
installed a Duron 1800 this time. Still no boot. so I changed the power unit.
Still no signs of life other than the green board led which lights up and the
fans run. I can't hear the hard disk start, but there is a led light on the CD
disk.
Click to expand...
Any help will be very gratefully received.
Click to expand...

Rough luck.
If you have your original packaging, check to see if the serial numbers are
the same as the one on the board :)

The only thing i can suggest is take out everything from the system you
don't need to get a post:
hard drive,cdrom, floppy put them back in if you have success in the reverse
order.
Only leave video card in, and no peripherals/other pci devices.

If you have it in the case(and you should take it out of the case altogether
if you can get the power button switch to reach)
No front panel switches(ie lights, reset) on except the power switch. Make
sure this is in the right spot. Sometimes the drawings on the board are
confusing.
An odd once-in-a-lifetime-one i had like this: the reset switch was busted,
causing a continuous signal or something preventing a bootup.

jo
 
disconnect the IDE/SATA data cables, boot with only cpu mem and vid
card, see if you get a post.

--
Best regards,
Kyle
| A couple of weeks ago I left a message on this board abut my A7N8X
failing to
| boot. A couple of you were king enough to make a few suggestions. in
short,
| when fitted with an XP 2200+ and all the other items to make a new
computer,
| the board would not boot. Eventually I stripped it down and took out
the cpu.
| Only at this stage did I get a message - not cpu found. I put it
back together
| bit by bit, but got no messages and no boot.
|
| So I sent the board back and got a replacement. I now have it and
have
| installed a Duron 1800 this time. Still no boot. so I changed the
power unit.
| Still no signs of life other than the green board led which lights
up and the
| fans run. I can't hear the hard disk start, but there is a led light
on the CD
| disk.
|
| I feel like chucking this board in the bin. I have never had this
sort of
| trouble before.
|
| Any help will be very gratefully received.
|
| DC
 
A couple of weeks ago I left a message on this board abut my A7N8X failing to
boot. A couple of you were king enough to make a few suggestions. in short,
when fitted with an XP 2200+ and all the other items to make a new computer,
the board would not boot. Eventually I stripped it down and took out the cpu.
Only at this stage did I get a message - not cpu found. I put it back together
bit by bit, but got no messages and no boot.

So I sent the board back and got a replacement. I now have it and have
installed a Duron 1800 this time. Still no boot. so I changed the power unit.
Still no signs of life other than the green board led which lights up and the
fans run. I can't hear the hard disk start, but there is a led light on the CD
disk.

I feel like chucking this board in the bin. I have never had this sort of
trouble before.

Any help will be very gratefully received.

DC
Click to expand...

Jody has some good advice. Let me wade in as well.

1- Remove the MOBO from the case. This will detect a short circuit
condition to the chassis. Place it on an insultated tabletop. Do not
place it on the anti-static bag that it came in.
2- Remove the power supply from the case and connect it to the MOBO.
By the way, you said you changed the power unit, but is the power
supply hefty enough to power the board? Anything under 300 W may be
marginal on one of the voltages.
3- Insert the processor making certain that the orientation is correct
and that it drops in easily. Before you close the locking lever
carefully inspect the chip in the socket for any indication that there
is a bent pin under the package.
4- Connect the heatsink/fan combo and connect the fan to the proper
connector.
5- Insert one memory stick and your video card. If you have it, try an
old PCI video card first.
6- Connect your monitor.
7- Start the system by shorting together the two pins that would
normally go to the on-off pushbutton. A thin, flat-bladed screw driver
works well for this. Once it starts, you can remove the screw driver.

If this works, then the next step is to put the system back in the
case and try the same configuration abgain. If it fails to start, then
you are short-circuiting something to the chassis. Carefully examine
all of the mounting points.

arnie
 
OK guys.

Thanks for all your help.
Eventually by a process of elimination - by virtually replacing everything, I
have found that the failure to boot is caused by a faulty reset switch on the
brand new Antec Black Quiet Mid Case.

All running OK now, but obviously the switch needs to be replaced.

DC
 
ScienceBaron said:
OK guys.

Thanks for all your help.
Eventually by a process of elimination - by virtually replacing everything, I
have found that the failure to boot is caused by a faulty reset switch on the
brand new Antec Black Quiet Mid Case.

All running OK now, but obviously the switch needs to be replaced.
Click to expand...

And I though I was the only one to come across a new case
with faulty switches! In my case it was the front-panel on
switch which was permanently open-circuit..
 
Same thing happend to me. Try removing the ram and put only one bank in. If
this does not work try the other, or a different one. I had to put my second
bank in and out a few times till it finally worked.
(2x 512 Corsair 2.0T XMS Ram in dual channel mode)

But from what you posted, this should be a memory thing.

Hope this helps,

andy
 
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