RAM installation?

By unforgiven1977
Jul 31, 2006
  1. I just tried adding an extra 512 to my compaq presario desktop pc. I'm sure the Ram type is correct. Though when I check different sources it varies between pc2- 3200 and pc2- 4200. Some sources say both are compatable. I'm not sure what the difference is.
    Anyway I shut down the PC, unplug everything, insert the additional RAM, plug everything back in, start it up...then as far as I get is the initial compaq screen before windows xp boots. You know the screen where it asks if you'd like to enter bios or setup, etc. If I hit f1 soon enough it enters the setup and I can see that it shows 1024 mb of RAM (the old 512 + the new 512) but my keyboard won't work at that point so I can't do anything other than power back down.
    So it seems to be recognizing the RAM but why won't windows boot? Why won't my keyboard work after I enter setup?
    When I remove the new RAM everything works fine again.
    Any help would be much appreciated.
  2. Kirbiboh

    Kirbiboh TS Rookie

    for 1 don't mix brands. all speeds should be compatable it just lowers it to the speed of your previous ram or the speed your motherboard supports. I don't know what the problem could be, meybe try reinstalling it? or switch them around this might work.
  3. Tedster

    Tedster Techspot old timer..... Posts: 6,002   +15

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