>> "Lisa" <0678768@00000hotmail.com> wrote in message
>> news:%23o4FmXBeHHA.3956@TK2MSFTNGP03.phx.gbl...
>>>I have a HP a1520y that I purchased before the vista release and came
>>>with 512MB of memory. It is vista ready. I got my free vista upgrade last
>>>week and installed it over the media center OS. Two days ago, I finally
>>>got my second stick of 512MB memory, same brand same specs.
>>>
>>> After the memory install and powering up I got a "new hardware detected"
>>> message and I hit refresh to get it to update my added memory.

Installing memory should not cause the "new hardware detected" message at
all.

More likely you plugged a USB device back into the PC into a different USB
port than it was in before.