Old motherboard dying?

hypermem

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Sep 13, 2009
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I have a (really) old Dell Optiplex (runs Windows 2000). Lately it has developed the problem of needing about 5 or 6 complete power-up/down iterations to get started after being turned off overnight. Before it finally boots successfully, on each failed startup, there are no BIOS beeps at all. I hear the computer fan startup, I see the motherboard check the keyboard and CD-ROM at least because I see the device LEDs flash, but then it just gets stuck and never gets to the point of showing anything on the monitor (the monitor behaves as if there is no signal coming in yet). Finally, somewhere shortly after the 5th attempt it "unsticks" and boots properly as if nothing was wrong at all. This happens without cleaning or jiggling any connections or boards. It just "magically" comes alive. This deterioration appears to be increasing because I can remember when a few months ago it only took 1 or 2 attempts to get it to "unstick".

What kind of failure do these symptoms indicate and is there anything I can do about it?

I do have a new computer. The reason I don't update this particular system is because it is for specialized use with some old discontinued hardware that took a ton of effort to get working properly.
 
It's possible there is a broken circuit in the motherboard. Thermal expansion/contraction *can* eventually break circuits in motherboards, though it's unusual that it would happen in a systems usable lifespan (yeah, it's still in a usable lifespan as far as motherboard durability is concerned). Perhaps that particular trace was weak to begin with.

If that is the case, then the process of turning it on 5-6 times warms the motherboard, expanding the traces inside and re-establishing the broken connection.

If this is true, then there is probably little you can do. the cost/hassle of replacing the motherboard will likely be more than it's worth.