New computer built but won't power up

[vcd4me]

Ok so I put together a computer yestarday and then went to power it uop and nothing happened.

The mb is jumperless so I didn't do anything with the jumpers.

Everything is pluged in .

Any suggestions on where to start trying to figure out what is wrong

BTW the fans won't even kick on when I turn the power on . Aren't they supposed to turn on immediately?

Thanks in advance
vcd4me

[LeoNapier]

Hi there!

Sounds like a prob with the power supply!
Is the power supply fan working? Maybe it's faulty or improperly connected or sth...
Check to see if ya got power in any of the other devices (apart from M/B) such as DVD-Rom, etc etc.
The fans on the M/B pick up power from it and they are supposed to work on boot up. If they aint working the M/B isnt getting any power.-check connections between power supply and M/B.

If nothing (including CD-Roms, DVD-ROMs etc) is working, it most likely sounds like a bad power supply unit. Not very expensive to replace - about 20 USD my side of the world. 8)

Hope this helps!


LeoNapier

[Capmaster]

Ok so I put together a computer yestarday and then went to power it uop and nothing happened.

The mb is jumperless so I didn't do anything with the jumpers.

Everything is pluged in .

Any suggestions on where to start trying to figure out what is wrong

BTW the fans won't even kick on when I turn the power on . Aren't they supposed to turn on immediately?

Thanks in advance
vcd4me

Is it an atx motherboard? If so that's a common problem. The atx mb allows the os to power itself down and in order to do that it has to control the PS. The old AT power supplies had a hard on/off switch, but an atx mb needs to have the front panel switch wired correctly before it'll power up. Make sure you have wired up all those little wire bundles going to the front panel correctly.

[mujahid7ia]

Is it a motherboard tray design ? If so, you should check if your MB is grounding out and he standoffs are installed correctly.

[gmatov]

See elsewhere.

Check the PSU switch, "I" side should be depressed.

Disconnect all drives, power and data. Try again.

Remove, reseat RAM, if 2 modules, try one then the other.

Pull 2 wire connector crom Reset pins in control wire cluster, short reset pins with screwdriver, some such.

If it starts, shut down, reconnect all at once or one at a time and restart.

Today's ATX PSUs need to be trained, PSU switch has to be on before plugging in power lead.

Hope it works,

Cheers,

George

[iooi]

Reset the CMOS ?
Some details on the board and what is connected would help...

[gmatov]

Not to ask a silly ? here, but it has not started for the first time, yet.

What in the CMOS should need reset?

Cheers,

George

Have you got it to start?

[iooi]

Quite often a new board requires the cmos jumper to be reset to clear settings.... Guess its because the boards been tested.
Caught me out once that one... Board acts totally dead untill you swop jumper and then replace.
I know you said a jumperless board but there should be something like it somewhere...Try the manual
Still didnt post any board details, would help no end if we knew...

[808smokey]

Not to ask a silly ? here, but it has not started for the first time, yet.

What in the CMOS should need reset?

Cheers,

George

Have you got it to start?

Yeah, I have Mobos arrive and had a little sticky on it that said to short the jumper before booting for the 1st time. Don't know why but that's what it said. Sometimes the are shipped with the CMOS jumper grounded to prevent static damage in transit and you have to switch it.

[vcd4me]

Ok I think I have it figured out....

Because I was in such a rush to build the computer I didn't think it through.

Here is the situation that I was in. the computer case directions give the directions forbtw its only one side of 1 sheet of paper)

1.front usb cables ...no problems these were pretty simple
2. line ins outs, etc....listed as red green black orange white blue, and yellow. ( BTW there are no front audio connectors on the case- DUH ! ! I probably should have noticed that first thing )
3. then there is IrDA connector? I don't know what this is and also which I don't see at all listed in the mb book.
4. LIke I said above no mention of power connectors

Anyways ...so I connected the colored lines into the line ins and and out but come to find out these wires are the power wires not audio line they are the same colors and there is no mention of power wire on the casae wires for

orange/white = power sw (1 double connector)
green/white = power led green + white - (2 single connectors)
blue/white/ = reset sw (1 double connector)
red/white = H.D.D. led (1 double connector)

now having said that I am not sure on how exactly to hook these up because of the way the mb book is written(poorly) . Maybe someone can help.

Here is how the digram is in the book :

left side pins - connector type
vcc5 - HDDLED connector
hddled - HDDLED connector
ground - reset connector
rstsw - reset connector
nc - reset connector

Right side pins:
vcc5 - acpliled
acpliled - acpliled
pwrbtn - pwrbtn
gnd - pwrbtn

Here are the questions
1. What does vcc5 stand for ? Is it the white wire or the colored wire? I am assuming white.
2.Does the power sw line connect to the adpiled or the pwr btn? and wich way des the wire go on? I assume pwr btn, but I want to be sure
3.the reset only has 2 wire but in the mb book it shows 3 ?
4. Is it safe to say that the ground is the white wires?

Thamks in advance
vcd4me

[redwudz]

It would help if you stated your MB. But get your power button hooked up first, the others can wait. If you hook up the HD or PW led backwards, it won't work, no damage done, just change it. Generally, the power lead is the striped one and the plain the ground. VCC5 is just a 5volt line. Reset only needs two wires. I have hooked these leads every which way in the past, but nothing was ever damaged. You may have to play around with the connections a little, but you should figure it out OK.

[Solarjetman]

It does not matter which direction you connect the switches. All they do is short the pins when you push the button.

the white wires are probably the ground, but look at the actual connectors, there should be some sort of marking like an arrow or line. That will mark Pin 1 that you should align with pin 1 on the Motherboard. But like I said, most items like switches will work either way. Others, like the HDD light will not work if in backwards but there is no risk of damage. The light is only a diode, and reversing it would only stop the electric flow, not the voltages at either end.

[gmatov]

Sorry, you guys are kinda right on the Clear CMOS, the boards which have actual jumpered pins have been known to be shipped jumpered to "Clear", most I see today you short soldr bumps.

Still, all "Clear CMOS" being jumpered will do is reset the board to default setting. Machine would boot to setup screen.

Go to your MB maker's site and look for the manual, print, in large format, the wiring location, match the connectors to the pinout.

On your 2 wire reset, 3 pin connector, "nc" means no connection, no wire there, although there might be a pin. Look at the speaker connector. 4 pin, 3 wire?

Cheers,

George

[vcd4me]

It would help if you stated your MB. But get your power button hooked up first, the others can wait. If you hook up the HD or PW led backwards, it won't work, no damage done, just change it. Generally, the power lead is the striped one and the plain the ground. VCC5 is just a 5volt line. Reset only needs two wires. I have hooked these leads every which way in the past, but nothing was ever damaged. You may have to play around with the connections a little, but you should figure it out OK.

The Mb is mach speedv4mdmp.
Case is soyo

There are no stripped wires only solid colored wire and they are twisted with white wire

So the power button should be hooked up this way
Power button pin to orange wire and ground pin to white wire.

I think the vcc5 pins should be hooked to the white wire because on the usb connectors they are labeled and on both usb 1 and 2 the vcc5 is hooked up to the white wires. Is this safe to assume for the hddled and the the power led.


Thanks again
VCD4me

[vcd4me]

UPDATE:

The computer is up and running ...so look out I should be starting to ask questions about making backups to dvdrs very soon....LOL

THANKS EVERYONE for your help

Signed
VCD4ME ( I might have to change my screen name now)