new computer

I decided yesterday to build a new computer. Bought all the things I needed and today proceeded to put them together got everything in and went to start it and no power . I have connected all the wires to the right places they are all labeled have tried them everyway I can think there is one problem with the wires that connect the power led have three holes and the power sw has two and I only have four prongs or pins. the power led is supposed to go into 2 and 4 and the sw power is supposed to go in 6 and 8 that is fine but the one with the lew poswer has three holes so don`t have enough room. Anyway when I press my power button I have no power coming on at all. My power that is connected to the mother board is in correct as it will only go in one way so guess it has to be right. Other than telling me my case is bad is their anyother reason for this to happen.

 

Maryelle-I must say; you are a Type A personality! You decide on something and do it!! . I swear, I must be slow, old, or both with a touch of Type B cause I built one about 4 or 5 months ago and it was probably a 4 to 6 month process from the original thought, the researching the best of what I needed, then the ordering and getting, and then the actual building probably took me several days-what with questions on the web and etc. . I congratulate you on your "Get it done" attitude! BUT when I fired it up, I got one greatly appreciated beep from POST and up it came. Had a few small things to correct, but has been really great since. I'm afraid I can't help cause too many details are lacking (for me, anyway) and I'm kinda a "hands on" and really would have to see to be able to comment on the problem, but hopefully more knowlegable than me ( and that includes most) might be able to help. Good luck!!

 

gueeing, but need more info

One Thing you left off, What type of case are you using.
Another what type of Mother board.

Usually the pins are in a double set column along an edge of the board. Ok.
Many times, they are number up one side of the board then down the other side, I.E. 1,2,3,4,5,6,7,8 on one side 9,10,11,12,13,14,15 & 16 on the other.
The rest of the time, They are even on one side, and odd on the other side.

however... What you need to check, is that ALL of you cards plugged in are in as firm and to the bottom as they can go.
this goes for your Video cards, Memory sticks, etc. etc.
It can be just a fraction off, and say 'Well that looks close' maybe for a grenade it might be, but for a computer it has to be on the money. TIGHT.
Track your wires that you are worried about carefully back to source... IE the power wires go back to the power button, the IDE led goes to the IDE led etc.etc.
Sit back enjoy a soda or tea or coffee, but just relax, and take it easy. Reach over and plug it in, and turn it on.

Best of luck, usually what is going on when nothing happens, is, it is because something is not plugged in right, it just isn't quite all the way in.

 

make sure the cpu is oriented correctly.
bob

 

You mentioned the power LED wires having the wrong pin position to go in the correct place on the board. Take the wires out of the plastic case when nessessary. If you look close there is a small plastic tab you can pick up with a knife to slide the wire out of the case. You can even slide the wire in another position in the plastic case.

 

You may be able to trace where you loose power as well as checking the continuity of connections with a multimeter. Last resort if everything else fails, and you have some assurance you are assembling components properly.

The problem could be a malfunctioning power supply, open wire, bent pin or the connector itself.

 

With those connectors for the LEDs and Power and Reset switches, sometimes you can put them in the wrong way. You may have them on the right pins, but you may have placed it in wrong. Try turning around the plug, and plug it in the same pins.

If that has already been tried, and still no power there are a few other things:

You're motherboard is not grounded properly in your case, and it has short circuited. You need those metal spaces in between the case and the board, but those should already be placed in the case at the factory.

Do any of the fans in your computer start spinning when you turn on the power?

-=stupid question=-
Is the switch on your power supply switched on?

... and as mentioned before make sure all your PCI cards are seated in tightly, and that your memory is pushed in, as well as your AGP video card.

If that doesn't work, then your power supply might be faulty.

 

Thanks for all replies. Did as you mentioned re checked all my work in fact unplugged everything off the motherboard and re did it all and when turned on the computer the power was on. So once again you have come through for me. By the way I didn`t just decide yesterday I did my research on the kind I wanted before. It just happened yesterday was the day to get the things and build it. Anyway next time I will check my work before I ask a question.
I always tend to think I did something wrong. Needed some reassurance.
The case and motherboard are both the same. I made sure of that. Thanks again

 

Well Done!

And congratz!

 

I spoke to soon I am still having problems with the booting up the monitor is blank. Have checked everything about a dozen times and evrything seems to be in the correct place. How can I tell if motherboard is damaged? That is my biggest fear. As evryone has said to be so careful of static and I was but one never knows. The one wire is still wrong I am going to try and correct that as was mentioned above. I am going to go through all my setup again and than if it doesn`t work will presume the motherboard is damaged would that be the only explanation???

 

Usually

Usually when you are putting a computer together, Insert everything as far as it will go.

MaryElle, try this..
Evidentally since you have more than one compuer..

First of switch monitor's, check that the new monitor works by plugging the new one into the old computer you are using for the Internet.

Second, AS we have said, IF the Video card is NOT totally down and seated, it will not work, close does not count.
Taken for granted now, we continue..
Taek the card out, put it IF you can into your Old computer, and check it that way.
If it is a different type, i.e. an AGP plugin and you only have on board video or stricktly PCI slots, then you may have to take it into the shop and let them check it for you.

 

I have had a similar problem. The problem developed after I had increased display resolution greater than specs. The screen was completely dark, not blank, when I rebooted to set the resolution. I had to go into safe mode and reset within the range for my video system. Having a " blank screen" may indicate a connection problem. I believe a "bank screen" shows when the monitor is plugged into AC as a stand alone and no connection to the CPU whatsoever. Assuming the monitor is OK the interfacing between the CPU and monitor is the problem. That would include cabling, video board, connectors, and wiring. Unfortunately the mobo cannot be ruled out

 

I regret I never got back and thanked all you for your help turned out the mother board was bad. Once I got a new motherboard everything worked fine. Thanks again for help.

 

Late

Sorry to be late on this thread.

Little tip for finding power pair of pins on atx board. Make sure you are in the right area on the board and take the end of a screwdriver or something similar that is conductive.

Carefully bridge pins in pairs until boot starts and then you have found your power switch connector Similarly touching again will power off or holding in place 4 - 5 secs will power down pc, depending on how power switch is set in bios.

Lazy tech trick

 

Because some electronic components may be marginal in quality, it is a good idea to leave the system powered up for a length of time. If there is a failure. warranty will cover. After a burn-in period of components one can expect functioning will be trouble free.