I am using this machine as a dedicated Oracle Server. This has 8 GB memory installed, but while upgrading it to 32 GB memory and updating the boot.ini with /3GB switch (multi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows Server 2003, Enterprise" /fastdetect /pae /3gb /NoExecute=OptOut), the server didn't boot. Now I have reverted it to 8 GB and it has booted successfully. Can anybody let me know why upgrading memory failed to boot the system and if /3GB switch has any relation to memory upgrade. How do I solve this problem? I need to upgrade the RAM and also use /3GB concurrently, is this possible?