PC I Built Will Not Start Up
SimpleMan
computer that I just built. I transfered the parts from my old case to
a new one that a friend bought me. I did not add any parts or change
anything...hardware wise. It is just a new case and power supply. I
took my time and made sure all the rizer and MoBo holes lined up, did
not remove the CPU or RAM from the MoBo...just the PCI cards and Video.
All the parts are in the new case and when I plug it up and flip on the
rocker switch on the power supply the machine lights up and fans spin
for 1 second and then turns off. The MoBo LED lights as long as the
power supply is on. The power nor reset buttons do not turn on the
system. What am I missing or doing wrong? I also want you to know that
doing this has taken me 12 hours. I am visually impaired and because of
my eyes have to work slow. To the best of my knowledge all the
connections are correct, but I must have missed something...it will not
power up. Here are links to the case that I have as well as the MoBo
PDF file. Thank you all for the help. I am excited about my new case. I
have never had a case with a window in it, led fans, and digital
display.
ftp://download.intel.com/support/motherboards/desk...
http://www.newegg.com/Product/Product.asp?Item=N82...
http://www.bccpc.com/712-4hlw-bk.htm
Thank you al again for the help. I need to get to bed. LOL I know that
12 hours building a PC is very long, but hey I am enjoying doing it
myself even though it is hard for me to see it.
Lance
Man, I know that frustration you're feeling. I've had a few computers
not start up the first time and I just felt like throwing them across
the room. But they all worked out eventually and they turned out to be
everything I thought they would be.
I hope others chime in, but my experience with your type of symptoms
(fans spin for a second then stop) is either a bad power supply or short.
If I had to bet, it would be that the power supply is bad. Can you use
your old power supply or beg/borrow/steal another, hook it up and see if
the computer starts?
Also, once I used a case that didn't use standoffs - the little screw
things that lift the motherboard above the mounting plate. It used
embossed dimples instead. The embossed dimples were pretty big in
diameter and they were actually touching components on the motherboard
and shorting them to ground. The fix here is to put some electrical tape
over the dimple and then mount the motherboard. Don't tighten the screws
too much.
Lance
*****
Chris Richmond - MD6-FDC ~
that the connecter from the power switch had to be turned around.
For whatever reason, one side of the switch was actually gounded,
and that side was being connected to the active power-on signal
and keeping the system turned off. Once I reversed the plug,
all was good again.
Chris
--
Chris Richmond | I don't speak for Intel & vise versa
Mistoffolees
In doing a swap like this, especially involving the PSU,
make sure that the 4-pin supplementary 12V is connected to
its header on the motherboard, in addition to the regular
20-pin power connection. It might have been overlooked as
newer PSU's now feature a 24-pin power connector or the
square 4-pin block no longer exists or needs an adapter.
If there is a [PSU] manual, check it.
binaryi...@gmail.com
It looks like all the other guys have summed it up pretty well, but I
have another two suggestions to add to the mix. First try unplugging
and then replugging all of your data and power connectors one by one.
If that doesn't get it going, try removing and reseating your video
card and any PCI cards. Make sure all your connections and cards are
plugged in all the way. This may seem mundane and unnecessary, but
from experience I've actually gotten computers to work by doing this.
Sometimes the cards won't be seated all the way and this will prevent
the computer from booting. AGP Video Cards seem especially prone to
this when they don't have the little plastic holders on the board.
Another reason this works is occasionally the metal contacts in
connectors will get a little build up on them and cause things not to
work unless they are seated "just right".
Oh, and another thing, if you try Lance's suggestion (which I'd highly
recommend), and the computer powers up with your old power supply, you
may still be able to get your new one to work before you go through the
trouble of sending it back and having to do all your work all over
again. Disconnect your power supply from all the parts inside the
computer. Take a metal paperclip or small piece of wire and your going
to short circuit part of the main motherboard power connector. Connect
the green wire with any one of the black wires, then plug your power
supply into the wall for about 3-5 seconds. This should cause the
fan(s) inside the power supply to start spinning and you'll be able to
feel air being lightly blown out the back side of the power supply.
Unplug the power supply from the wall, reconnect all of the internal
connectors to your components, then plug back into the wall to check if
it works with your new power supply. Depending on exactly how bad your
vision is, I'd suggest finding someone to try this for you. It's not
difficult, but I've never been around to find out what happens if you
short out the wrong two wires; it can't be good (unless you're a
pyromaniac or like to be electricuted). This is an old-school computer
tech trick that I picked up years ago, and it has a surprisingly high
success rate (~>25%).
Daniel
SimpleMan
have the PC up and running. Here is what I did. I took it all back
apart...everything out of the brand new case...even the 500 watt power
supply. I then placed the MoBo in the case gently with no risers and
took toothpicks and placed them through every screw hole in the MoBo.
Then where the toothpicks came through the screw holes on the case I
placed a green mark with a Sharpee. I took the MoBo back out and placed
risers where my green marks were on the case. I put everything back
together and built the PC and put the 500 Watt power supply back in the
case. Pluged it up and sure enough...the same issue....it would run for
1 second and shut off. I knew that the MoBo was mounted correctly so it
could not bed a short. Come to find out...this is a case with a
polorized reset and power turn on lead. They only work one way...if
they are backwards that act like a turnoff switch. I knew the rest and
power on wires where in the correct place on the MoBo, so all I did was
flip them over and sure enough the PC fired up, booted, and is working
like it should. Now I need to finish all the front panel
connections....case speaker, and all those little do-dads on the front
of the case...temp monitor, front panel USB, and audio. Once that is
done it should be complete. I may be back with more help with
those...they are labeled but notg sure what the labels mean. Thanks for
all your help.