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Remove everything from the board except the front panel hookups.Make sure you remove memory, video card, hard drive and cdrom cables, hard drive and cdrom power, anything plugged into the back except the power. If it will power up this way start plugging things back in between power cycles. Start with memory then power down. Then add video then power down. Continue with Cdrom, then hard drives. When it stopps wanting to power on you know where the issue lies. If it wont power on with nothing on it then the motherboard is probably bad. Hope this helps.
Actually your Motherboard is knackered - i had this when i built my own shuttle sn26p 4 years ago.
Motherboard was sent back and they replaced it, the fans were on turbo as soon as you switched on - the bios maybe also flashed again if you can get into it as nothing loads as you say.... just send it back to the manufacturer - it's more common than you think with the shuttle
If you've installed the cpu and hooked the fan to the power supply plug, which is just left of the cpu mount, then the board if connected to the power supply cables, it should start up. Regardless of the front switches. However, you probably don't want to start plugging in the power cord until you have all of your components in place and ready to close up the case. First you can create a shock by just touching the board and that can damage the board. (I speak from my own experience :-( .
But once you get the power switch plugged into the board that should take over turning the rear power supply on and off (Including the cpu fan)
Good Luck and don't forget to leave a rating, based on my solution.
The light on the motherboard will be on as soon as you plug the power supply in. If, when you turn on the computer, the fan in the power supply does not start, your power supply is bad. In my experience, the switch in an ATX machine does not go bad--it's just a device to close a contact. If you really want to check it, though, find the place on the motherboard (lower right side as you are looking at the board with the top of the case away from you) where the wires from the front panel are plugged in--the ones that say pwr switch or something like that. When I do this, I remove the wires from the motherboard and short the two prongs where the wires were fastened. In all probability, though, you need a new power supply.
The reason that your AGP card fans are on and your drives are on is simple because those devices have power. If the fan on the processor isn't working, then look for the wire that rut ns out of the fan and into the motherboard. Make sure that's plugged in. If it's not, then plug it in, but if it isn't this most likely means that your Heat Sink/Fan is broken. I woulnd't start your computer if the fan isn't working because your processor might overheat. One thing, if it doesn't beep, that means that it's not posting, which means start up tests are failing. Right now it seems like your processer is the problem right now, but I would take it to a repair center just to be sure.
Hi jderek4, try this. locate the toggle switch on the back of the power supply. Just find it do not flip it.
Plug the PSU's power cord into the PC. Just as you got a good connection & the PC begains to power up move the toggle switch to it's other position. The PC should power off that very second.
If the PC does not shut off than the PSU is bad. If it did shut down wait a few seconds. Press the cases power on button. The PC should start to boot up. Let it finish loading. Click the start button & choose to shut down windows. The PC should shut off.
Yes? If not than your back to (bad power supply). Swap it out.