Thinkpad R40: Three beeps on startup

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IBM Thinkpad R40:
Once in a while, when first booting up, I'll get a sequence of three
beeps, a pause, three beeps again, etc.  When that happens, I need to
power down, then power up again.

It only happens occasionally, and so far I've always been able to boot
up on the next try.

Any idea where I should look for the problem, and if it's likely to
become more severe?

Rick Carter

Re: Thinkpad R40: Three beeps on startup

Possible DIMM error. Get the hardware maintenance service manual from the
IBM web site. It has all the service information in it.

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