PC Boots for 4-5 second's then shuts off IM GOING INSANE!! PLEASE HELP A PEON!

Hello all, well i installed a new mobo last night. The install seemed to go pretty smooth.Untill i tried to turn my little sweetie on. I realized that i didn't have a power switch so with alittle reading from the manual i cover the 2 pins of my system panel connector with my old power switch. well it started to boot up,
then it shuts off. It starts for about 5 seconds all the fan's are working during this time. The Led on my power switch lights up like normal but when i hot the switch nothing happends. The stand by light on my mobo stay's on after the fans shut off. i googled my problem and tried resiting my HS fan, no go, tried connecting my fan's to diff. fan connector's nothing, tried a new power supply zip, I need a major genius to help me out or just some cool dude.
I Thank Anyone who respond's to this thread for any reason Thank you for talking the time. peace love & PC Power.

AMD Atholn 64 3500+, ASUS A8N-SLI DELUXE MOBO, 1 gb RAM, ATX 480 WATT PSU NVIDIA Geforce 7300 GS pci-e

 

The only thing I can think of is that the CPU is overheating and the board automatically shuts it down. However, brand new cpus and fans don't typically overheat at stock settings.

 

What if you momentarily shorted the two pins for the power switch? The system should turn on and boot up then.

I think just momentarily shorting the two pins by pressing the Power On button and releasing it (or shorting the two pins with a wire or jumper) should send a signal to the psu (if it is an ATX psu) and cause the psu to "turn on" and power up the mb.

Turning on for about 5 secs. makes you wonder if it is going into sleep mode.

 

try unhooking the power switch from the board and starting the board from the two power pins on the board.if that dont help unhook everything,hard drive,cd rom,floppy and just try to get the board to post. ed

 

Thank's you guy's for your help, really. Thanks tunered how would i start from the 2 pin's? i'm going to try stardi's directions. is that what you wanted me to do? short the power pin's. It is a ATX PSu 480 watt brand new
thanks again

 

dont work on the power supply,the pins where you plug your power button into on the board [this is what we are talking about]. look in your board manual there is a diagram of the pin locations and tells you what they are for.short across the two power pins just long enough to make your fans kick on,this will make the board run without a power switch hooked up to the board. if your processer is good,memory good,the board should go into the setup[bios].that is a good thing.is this the same processer and memory you used before? ed

 

another thing i forgot to tell you,unplug the power supply from the back,take your board battery out and let sit for a couple minutes and then put back in this clears the cmos. ed

 

On the the diagram find the two pins that you connect the power on switch to and touch them with a - drive screw driver for a split second, the comp should fire up,if it doesnt find the cmos jumper on your motherboard diagram follow the instructions in the manual to reset your cmos you can also remove the cmos battery for 5 secs to reset,the little round flat battery about an inch in diameter

Have you connected the ATX 12v power connector?

 

That's what i did when i 1st tried to boot up. I finished putting everything togeather i plugged her in and clicked the power switch on the back of the PC (PSU) notrhing happend. i read the manual and found where the power pins wer. It said they just needed to be covered so i covered them with a funny looking 4 outlet connector from my PSU I have an ATX A Power Ultra Edition 12v intel P4 Power suppy unit complies with amd and intel Mobo's
after i cover them i tried to restart with the switch on the PSU ,it tried to start. so i removed the 4 outlet connector from the power pins and it still does the same thing. i think i just needed to do that once. in order to short the pins which i did so this bring's us to the present tried the batt. no go what is the v12 plug? is that the plug with four little square inputs that plug's into the mobo? if so it's in.

 

PS the only thing i have in my cpu is me processor and my hard drive.

 

When you turn the power supply on at the switch that is built into the power supply, some things might come on briefly and then go off-- that is normal. What you want to do is unplug the power supply from the wall socket and then make sure that the power supply connectors for the motherboard are all plugged in correctly.

Looks like the motherboard you have has a 4 pin connector (white in color) just a little behind where the keyboard and mouse plug into the back of the computer (the i/o area or input/output). You should have a connector from the power supply that will fit that 4 pin connector on the motherboard. Plugging those together will supply 12v to the AMD64 processor (maybe just extra 12v-- but it is needed by the processor). That connector should be "keyed" so it is hard to plug it in the wrong way but fairly easy the right way.

Your motherboard also has a 24 pin connector on the opposite side of the i/o area that needs to have a 24 pin plug from the power supply plugged into it. That connector is also "keyed" so it will fit easily one way only. It is also white in color (I think). That connector supplies different voltages to the motherboard to make everything work. One of the voltages on the 24 pin connector is a 5v "signal" that is always on and will tell the power supply to turn on "the rest of the power" when the power on switch on the front of the computer case is momentarily pressed. You need to normally leave the switch on the back of the power supply on so that the 5v signal is available to the front panel switch.

There is a group of pins on the motherboard probably called the system panel connector in your motherboard manual (or something similar). On that group of pins there are two that your manual describes as being for the ATX Power Switch-- that is the switch on the front panel of the case. When you plug the front panel switch onto those pins, you will be able to short the pins together with the front panel switch and signal the power supply to turn on via that 5v signal that is always present. It should not matter which way you plug the switch onto those pins just be sure and use the correct pins. If you don't have a front panel power on switch (the ATX Power Switch), you can momentarily connect those two pins with a jumper block or piece of wire or screwdriver and simulate the action of the power on switch. If all the cables are connected properly the computer should start up and do a POST or power on self test.

What I would do is put everything together and make sure the cables are all plugged in where the manual says to plug them. You will have a lot of unused cables and/or plugs from the power supply which is OK. Take your time and double check everything. Do all of this with the power supply unplugged from the wall socket. When you are finished, plug the power supply back in the wall socket and turn it on at the switch on the power supply. Things will turn on briefly (fans, maybe something else) and then go back off-- this is normal. Then you can press the front panel switch and the computer should boot up.

 

Put a stick of memory in with this aswell, a system cannot boot without any RAM installed

 

Yeh as baboomin said you must have memory installed,you DONT need a harddrive installed,could you explain this

I'm really not sure what you mean,what power pins?Could you point them out on this picture

 

thanks again i have had the ram in the whole time. sorry i forgot to mention that. The "power pins" are the last thing in the bottom right corner they are 2 of 20 pins in the system panel connector. the 1st thing i pluged into them came fromt he power supply.

 

have you tried resetting the cmos jumper yet or removing the battery?

 

Yes,both same thing this has beaten me down. i'm hurt. could it be from the mobo touching the case?

 

there is no plug on a power supply that will fit them pins,can you explain?

 

omgoodness! My friend had the same problem. His computer was plugged in with an adapter because his pwer outlet didnt have aplace for the ground. He had me take a look at it , and i said there is no way a computer without good grounding is good. He bought a new outlet with the ground prong place on it, had me install it and it has worked fine since. Hope this helps.

 

yes, it was the plug that gives the floppy drive power. i didnt know what it was for cause i dont have one. my bro told me what it was. sorry about the confusion. thats what i covered the power pins with the 1st time to start it.
when i tried to start fromt he switch on the Power suppy my problem would start. the fans and everything else go on for about 4-5 seconds then nothing.
im thinking maybe i need a power switch. it seems to be waiting for me to turn it on. almost like it's idling poor little baby i miss her......

 

around them pins it should say something like front panel,if you plugged the power supply line for the floppy on them pins,you may get lucky and not need a new board. ed

 

Yeh you could have fed the low current relays a pretty high dose of 12 and 5v,you could indeed be looking at a new board

 

i think thats what happend thanks everyone! !!