Back a while ago, I posted a "memory management" problem with my home win2k machine. Now I believe I have the answer. I believe the mobo (ASUS A7V) is the problem. Sounds strange, but that's all I could find. The story should start from Friday night, I never checked ASUS PC Probe for system details, I only use it as a temperature/voltage/fan speed monitor (the most important reason since from day one, I overclocked the CPU). Win2k build-in utilities provide more info, so that I had no need to use PC Probe for such purpose. However, I spotted something "wrong" when I first time opened up PC Probe's DMI Explorer, it shows "Memory Module #2: Installed 64Mb, Enabled 64Mb", but I have 2 stick of 128Mb RAM and anywhere else report 256Mb RAM in total. Then I swapped RAM (DIMM1 <-> DIMM2), same result. Then I moved RAM from DIMM2 to DIMM3, system "crash". Any RAM in the 3rd RAM slot would crash win2k, only #1 & 2 "work", and only RAM in slot #1 would show "Installed 128Mb, Enabled 128Mb" in PC Probe. Now is Sunday, I couldn't do anything at weekend, I will replace the mobo tomorrow (if possible), and let the list know how things going. Jun Qian The NOSPIN Group provides a monthly newsletter with great tips, information and ideas: NOSPIN-L, The NOSPIN Magazine Visit our web site to signup: http://freepctech.com