Why do every time I attach different RAMs (256mb and 512mb same PC3200 and DDR 400) my computer will restart ?

January 6, 2009 on 4:18 am | By | In bluefreesky.com | Why do every time I attach different RAMs (256mb and 512mb same PC3200 and DDR 400) my computer will restart ?
  • i can still use the PC for 20min++ sometimes i can use it in one hour but still will reboot


  • are the ram modules of the same brand?

    it has nothing to do with size and type, it's most likely the timing (different brands) or even worse a defective ram chip. if it's a defective ram chip you should get a BSoD, if so disable the automatic restart, so you can read the error message.

    added:
    to check which module is defective remove the 256MB stick and run the PC with only the 512MB. the PC will then run somewhat slower, but if it runs more than 6 to 12 hours without rebooting you should replace the 256MB with a 512MB.
    if it still does reboot with the 512MB alone, you can try the 256MB running alone but this will horribly slow down the PC.

    if both sticks work fine alone then you have the rare case that the 2 different brands of memory are not compatible to each other (this behaviour is known for some brands).

    if the PC still does reboot even if you use 1 stick at a time, it could also be a driver issue, likely the graphics card driver.







    • #If you have any other info about this subject , Please add it free.#
    Your name:
    E-mail:
    Telphone:

    Your comments:


    If you have any other info about Why do every time I attach different RAMs (256mb and 512mb same PC3200 and DDR 400) my computer will restart ? , Please add it free.