What's wrong with my motherboard??? **Help!**

[placebo139]

Here's what my problem is...

I am running a 700 athlon slot a on an Abit mobo. I bought the thing about a year and a half ago (i forget how long ago) and recently, it began to act strange. There were times when the computer would turn on, and then suddenly stop booting right before it gets to windows. Eventually, this problem became worse, and now it won't even start!!

Here's what I've tried...

- Three different video cards, 2 AGP and 1 PCI, none of which made a difference.
- Three sticks of 128 PC133 RAM, none of which made a difference.
- Another slot a 700 AMD chip (that was known to work), without making a difference.
- I tried everything in the same combination on another motherboard (Epox, I believe) that was known to work, but it made no difference.
- I tried two separate 300 watt PSUs, and I double-checked every connection
- Motherboards are jumper-free, and I have a good working fan.

Please help me... I don't want to spend any money at all buying a new system or mobo/CPU combo. I know I'm doing something wrong... but I just wish I knew what it was. Anyone with any suggestions? Help would be greatfully appreciated!!

 

[Acanthus]

will it power up and not post, or is it not powering up at all?

did you try clearing the CMOS?

What is the model of the mobo?

 

[placebo139]

When I power it up, the monitor is left on standby, and there is no beep from the motherboard. The monitor refuses to turn on, and nothing happens at all.

How would I go about clearing CMOS? If it's just taking the battery out of the board and replacing it, I've done that already. Here's what I know of the mobo.

Abit KA7 motheboard
-slot a
-via apollo kx133 chipset
-supports up to 1 ghz amd

thanks