E & S series ThinkCentre Desktops

[#1]

I have an S50 (8183) Thinkcentre, P4 3Ghz and 1GB RAM.

When the computer boots/POST there is a long series of beeps, perhaps 30 and then it proceedes to boot normally and load Windows. All devices work and appear in the device manager. I can find no faulty hardware devices.

Anyone know why this happens or how to stop it? I see no obvious options in the BIOS setup.

[#2]

Download IBM Hardware Maintenance Manual in .pdf and read pages 69-70 (pp. 76-77 in Adobe). It explains the beep messages.

S50-8183 Hardware Maintenance Manual

Hope you find your answer in the manual.

[#3]

It's not in the manual.

It turns out that it is the USB keyboard. For some reason the computer is erroring out on the replacement USB keyboard. I attached a PS2 KB and all is well.