Computer turns on for ~1 second, then immediately off.

[Joonce]

I just transferred my computer components to a new case, it had previously been working fine.

Now whenever I turn it on, the fans/etc. turn on for approximately 1 second, then everything immediately shuts off.

Here are my specs:
Intel Desktop Board dg33fb
Intel Core 2 Duo E7500 @2.93 GHz (stock) w/ stock cooler
Diamond Radeon HD 4670 w/ Zalman VF900 cooler
Patriot PC2-6400 2GB RAM (2x1GB) PSD22G800K
Thermaltake 500w PSU
Maxtor 320GB HDD

I have already determined that it is not a PSU problem, as I tried it with two different PSUs and the problem persisted.

I also tried removing all components except the Processor/fan, and then the CPU fan did start up and stay on, and I got the BIOS code of 3 beeps.
Which means:

3 beeps - Base 64 K memory failure

* Reseat the memory.
* Make sure that the contacts on the memory and the socket are clean.
* Try removing one bank of memory modules at a time. Note: Some systems might need to have a memory module in Bank 0.
* Try using memory modules from the same manufacturer with the same part number and speed.
* Check for a faulty memory module by trying the memory in a known good system.
* Trying known good memory in the system.
* Check the power supply and check for power fluctuations.
* If the steps above do not resolve the problem, the desktop board may be defective. Try a different desktop board.

This made me think that maybe my MOBO wasn't screwed, so I tried each of the 2 RAM sticks individually, and it shut down as before.

Then I tried known good RAM from another computer, still nothing.

I also tested the MOBO battery with a multimeter, and it was good.

So unless someone knows anything else I could try, then I suppose I need to buy a new Motherboard.

[msmrx57]

Double check all the connections on the mobo. Unplug and reseat them. Sounds like it could be a bad connection.

[x88x]

I also tried removing all components except the Processor/fan, and then the CPU fan did start up and stay on, and I got the BIOS code of 3 beeps.

Well, here it was giving you the RAM beep because you took out the RAM. If your CPU or PSU were blown, it shouldn't do anything. Hmmm... check for loose connections, crossed wires, etc. Does the CPU fan come on when the RAM is plugged in? Check both ends of the cable on the CPU cooler fan.. Hmm, nothing else comes to mind right now. I'll let you know if I think of anything.

[nevermind1534]

There might be a short somewhere. Check for grounded pins, etc.

[Joonce]

Thanks to everyone who responded so quickly, I unplugged everything again took out the battery for 15 minutes, and then manually connected the power pins, and it worked. Everything is back in my new case now and working wonderfully.

Case closed. (get it?)

[msmrx57]

Glad to hear that.

[x88x]

Must have been something screwy in the CMOS. Good to hear that fixed it.

[Oneslowz28]

Glad to see it was something that fixed it self. Now head down to the case section and post pics!!!