Aghhh my new comp won't even turn on... Edit:need help, shorts out w/case...

[Packin]

Just finished building a comp with these specs:

P4 1.8A
Gigabyte GA-8IRXP mobo
MSI Geforce 4 ti4400
350 watt Enermax power supply
256 mb kingston pc 2100


I got everything hooked up, and connected the keyboard, LAN, monitor, and power cord. Nonetheless when I turn it on, the LAN light lights up. Then when I go to press the power switch, the cpu fan turns on for all of one second...I'm going to switch out my power supply and see if that's the problem but I really hope not as I only have a 250 watt from my old comp. Please help!! Thanks!

EDIT: Tried the 250 watt supply and same results...as an addendum, all of the fans (case, cpu, video) turn on for bout a second. I have also reseated the video card in case of a short or something but the fan does turn on... What's wrong??

-Packin-

 

[Packin]

bump, plz help! also, the power fan doesnt seem to come on but the other fans do..

 

[JoeBob]

Two possibilites come to mind. One is that your case leads (LED, Power, SPKR, etc) are not connected correctly. Power switch wires specifically might cause this. Another possibility might be the memory. Have another stick to try? Those are my ideas.

 

[apriest]

I've seen this happen on Giga-Byte boards when the CPU fan was not connected to the motherboard for power. It senses this and turns itself off. There is a jumper that can disable that feature. Think that could be the problem?

 

[RemyCanad]

My soyo dragon has a feature such as apriest stated. If I didn't have a fan plugged into the motherboard my computer would turn on then the safety would shut it right off as soon as it detected it. If I held some key it was supposed to turn it off so that I could get into the BIOS to shut it off. I just plugged a fan it until I get it shut off.

Also you might want to check the power out of your wall outlet.

Edit: wording misstake

 

[Packin]

Well I do have other memory but it's pc 133/100 so will that work in newer mobos? Also my cpu fan is definetely connected...maybe it doesn't detect it...? Nonetheless the cpu fan does spin for bout 2 secs. What doesn't spin is the power supply fan. Now before you say that the supply is bad, I also tried my old power supply that was working just this morning and its fan didnt turn on either. Is there a seperate connector for the PSU fan? or some other obscure connector that isnt readily apparent? Thanks again.

 

[apriest]

Those Enermax power supplies rock. They have 2 fans in them. Depending on the model, one of them plugs into the motherboard for power just like the CPU fan does. I've never heard of that not allowing the system to boot though. Does your CPU fan have a 3 pin connector and 3 wires? If not, the motherboard won't be able to detect the RPM and it will think it is not plugged in.

 

[Packin]

Ok, where does that connector from the PSU to the motherboard go? I tried putting it into the slot that says pwr_fan but it didn't do anything? also tried the sys_fan. my cpu did come with that 3 pin connector and i plugged it in but i guess i'll try replugging it in. not gonna be home for a few hours so will post something up then. Thanks again, and plz keep giving suggestions.

 

[apriest]

Well, maybe the computer isn't running long enough for that 2nd power supply fan to crank up. I'm about out of ideas for ya dude. Guess it's time to start yanking things until you start getting beep codes you can work with. I guess I'd start with the RAM or video first, then the CPU next. I've been there, it's frustrating...

 

[RemyCanad]

I am a bit confused about your last post could you explain what you did again... (I think I am just out of context)

Also I have never put together a P4 system but don't you have to connect the 4 pin power connect to the motherboard. (I can't remeber the name for it errr but its square)

Also does your CPU fan plug into your mother board?

Have you looked in your manual for the help?

 

[apriest]

Yes, RemyCanad is correct. On P4 systems there is an extra 2x2 power connector that goes to the motherboard as well as the ATX connector. Most new power supplies have them, and I think every current Enermax model does. Those P4's sure do get hungry!!!

 

[Packin]

Ok i've isolated the problem and it seems that after i reseat the memory and the mobo is HORIZONTAL everything will work fine. But, when i put the mobo in the vertical postition it doesnt run. I've reseated the memory as hard as i can, and pushed in the psu cords as hard as i can but nothin...is my mobo bad? or memory? anyone else have this gravity problem (and yes i know it sounds weird but i cannot for the life of me get it to run in the case. Thanks for the help.

-Packin-

 

[Packin]

weird...did some more testing and now it seems that it can be in the upright position but it can't touch the bottom of the case...gonna try putting masking tape or something on what it stands on.

 

[Packin]

Ok found the root of the problem. whenever the mobo (or rather the metal detachable piece that it sits on) comes into contact with the case it shorts out (found this out by the SPARK the emits from the place of contact)...how in the world can i fix this?? other than getting a new case. Thanks for all the help.

 

[Viper96720]

Get fiber washers and put them between the board and the tray the board is attached to,

 

[FluxCapacitor]

It's because your motherboard is not attached properly to your case. I hope you're not trying to attach the motherboard directly to the case. That would definately cause problems. You have to use standoffs to isolate the motherboard from the case. These raise the motherboard off the case and assure proper grounding. ALSO, you can't have any EXTRA standoffs, particularly metal ones, underneath the motherboard or else they will create a short circuit between the motherboard and the case.

 

[Packin]

yep definetely had extra standoffs, removed those and it seems to be working fine with my 250 watt psu. the 350 watt psu is a different story, i think something got fried in there cause now it wont even turn on my old p3 450 mobo. blah, guess i'll have to exchange it or something. thanks for the help.