KT7A won't post... please help!

[Valkyr]

I've had this problem for a few weeks now and the guys over at Icrontic are completely stumped so I thought I might seek a larger audience.

Everything in my computer works on its own, the CPU (a 1.2 Tbird)works (tested in newer system), the motherboard was sent from a friend who knows it works (its a KT7A-R), RAM works, Video card works with newer and older systems, power supply is new and tested to work... everything works but it still doesn't post. The HSF is connected to Fan1 slot so that's not the problem (the default setting would turn off the computer if something wasn't connected to Fan1). I cleared CMOS still nothing. I've tried booting it barebones (just CPU, RAM, Vid) and I've tried booting it fully loaded (everything connected). I get no response but a slight flicker of the monitor when I power on. Then it just hangs, as if there's no CPU in the mobo, but there is one and it works.

Please help me... any suggestions no matter how crazy are greatly appreciated.

[edit]I hate mispelling the title[/edit]

 

[Aenslead]

Is your tbird 133 or 100Mhz?

See if you can find a way to boot at 100Mhz. See if it works. Also, check multiplier settings, as well as voltage.

 

[DieHardware]

Was the PSU unplugged when you cleared CMOS? Some boards won't clear otherwise. Is the HS seated correctly? No gaps between it and the core? Oh and what kind of RAM?

 

[Valkyr]

The RAM is PC133 and I made sure to unplug the PSU before clearing CMOS. How can I change multiplier and voltage settings when it won't posts? The fans come on, the hard-drive spins, the cd-rom spins... but no video... maybe it needs a PCI graphics card... hmm...

 

[KF]

Sure, try a PCI video card if you have one. They are less finicky than AGP. If the mobo doesn't beep, I think you have a problem before it gets to the video card.

Resetting the CMOS is not very reliable on my ABIT KT7. Sometimes I have to go around twice or three times. The other way of setting it back to a default CPU is to hold down the Ins key while you power it up. If you do that, go through the same routine beforehand of letting the power supply discharge for a couple of minutes, pull the plug, and replug. Sometimes I have to go through the Ins routine twice to get it to reset.

Sometimes people accidentally get something behind the mobo which shorts it out (like an extra standoff), so it is often recommended to take the mobo out and hook it up sitting on a box. Leave all the IDE devices disconnected, and the floppy, and everything that is not necessary.

You can take off the plug to the reset switch in case it may be stuck or shorted somewhere. Maybe an LED is mistakenly plugged into the reset pins. Pull off the LED plugs.

Check for swollen, leaking electrolytic capacitors. Those are the ones that look like cans.

 

[smf96822]

my old a7v had such a problem. Usually i removed all cards, reset cmos, unplugged and let sit overnight. Usually worked again in am. Once it was a ram timing issue bios ; 3T issue. do not recall exact settings.