I opened up my case to add a second stick of PC2700, 256MB.  After installing it, I saw the computer boot normally through POST.  I think I heard the Win98 opening wav, but I'm not certain.  I was looking at the chipset fan that has been giving me problems, and was not spinning.  When I looked at the screen, it was totally blank. I turned of the power and removed the new memory module.  However, the POST now fails at every power up.  All of the fans come on (except the chipset fan that needs encouraging), and I can hear some brief activity that sounds like the hard drive, but the screen remains completely blank and the pc case speaker beeps periodically.    I can't find anything in the motherboard manual that addresses this problem or explains the beep.  I substituted a different video card that is known-good, but there was no change.  I tested the voltage of the bios battery.  It's at 3.3 volts.  This motherboard (Iwill xp333) is less than 2 years old. What should I do? Thank you for any help. -Barry

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