Power up problem

[fevoldj2]

I just braught my computer back from a lan party which worked fine there. I had the voltage switched to 220 (i live in europe) and plugged into 220 obviously. Then i went back home and switched it back to 110v and plugged it into my transformer, and to my surprise, when i turned it on, the fans spun for a split second and then turned off. Even the PSU fans spin for a split second. I then immediately searched the web for a solution, and followed their procedures. I unplugged everything but the essentials, and still nothing works. I have tried different outlets, and made sure nothing was touching the motherboard. Rember, the computer was working perfectly fine at the lan party.

My computer's specs are as follows:

Asus A8V Mobo Bios 1006 rev 1.02
130nm Amd Athlon 64 3500+ Processor
2x 512 mushkin value ram pc3200
2x WD 200gb Harddrives
DVD Burner
XFX Geforce 5900xt 128mb
Thermaltake Silent Pure Power 420watt PSU (worked fine b4)

Please help me find a solution to this, it is very frustrating not being able to use my expensive toy. Thankyou very much!

 

[powerMarkymark]

Have you tried reseeting everything? Maybe something came loose during transport.

Check your CPU fan as this sounds like the BIOS not letting the boot sequence due to no CPU fan spinup.

Good luck

Marc

 

[fevoldj2]

The cpu fan does spin up when it turns on for that split second, i know that the cpu is seated correctly because it is lodged under the heatsink (lol) I have tried reseating everythin, the huge 20 or 24 pin connector (don't know how many) and the 4 pin connector. I will try to reseat the fan connector though, and how do i reset the bios? maybe that'll work Thanks for the reply

 

[CyGoR]

Whenever I encounter a problem and I don't know what part the problem causes, I usually unplug everything not essential for booting a system.

So try to unplug (from both motherboard and psu) your (optical)drives, remove any add-in card, any fans or lights and if you have one lying around, replace your video-card with an old pci device.
When your system boots, try pluggin in the devices one by one to narrow the problem down.

I've found this approach to work for me, but since your problem might be psu related, it might not help..

Good luck!

 

[fevoldj2]

I don't believe it to be a power supply problem because there are no smells or anything coming from it. I don't see anything burned on it or the motherboard and it was working fine just the day before. I have tried unplugging everything besides the essentials, but still does the same thing. I've tried reseating the cpu fan also. It has been suggested that maybe the psu is using it's safety mechanism not to turn the computer on. But i wouldn't know why it would do that.

 

[TwoBills]

You could try setting it back on 220 and plugging it into a 220 outlet. See what happens.

 

[fevoldj2]

I've tried that though... i'll try again.

 

[fevoldj2]

no, 220v doesn't solve the problem, just the same thing. It isn't the cpu fan cuz i tried another one... any more ideas? Asus doesn't have motherboard phone support cuz they're cheap, so i sent out an email that probably will never be replied (sent on saturday)

 

[fevoldj2]

anyone have an idea? please help

 

[CyGoR]

To make sure it's not a powersupply problem, you could try the following:

Disconnect all powerconnectors from the PSU to all devices. Also from the motherboard.
Connect the green wire from the PSU to one of the black wires of the same connector. This should make your PSU start, which you can check ofcourse by looking at the fan
There are some PSU's that require some load on it before it can start, you can try by connecting a HD to it if the above doesn't work.

If the psu does start, it might be a motherboard problem.
But if you can try the video-card/memory on another system, you can continue to narrow down the problem.