Thinkpad A20 won't boot. Beep codes?

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Just received a Thinkpad A20 2628-24U. When attempting to boot, I get
3 beeps a short pause, three more beeps, then a longer pause and one
beep. No video at all. I've tried booting with no battery, no hard
drive, different RAM and no RAM. I only get the beeps with no RAM
installed, but no video at all. I got into the BIOS once on first
boot, but shut it down and replaced the RAM. Since then nothing with
the old RAM or new RAM. Any ideas or solutions? Would a dead CMOS
battery cause this? Any help appreciated! It uses PC100 RAM.

Re: Thinkpad A20 won't boot. Beep codes?

ken10254 wrote:
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It uses _lo-density_ PC100 RAM for 256MB memory, what size are you using?

The BEEP errors indicates a memory or MB error.

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Re: Thinkpad A20 won't boot. Beep codes?

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Since my post, I decided to let the a/c adapter charge the battery for
a few hours to see if it made any difference. Seems that it did! After
about 2 hours of charging, I was able to boot up with either set of
RAM that I had available, get into the BIOS and start loading an OS on
it. I'm guessing that the cmos battery was discharged. That's the only
thing I can think of. Does this make sense?
Anyway, all seems to be well this evening, so I'm happy. Thanks for
your reply.

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