What motherboard? Check your jumpers and BIOS settings...if your board has SIMM & DIMM slots, it may be thinking you have a SIMM installed and mis-reading. Test your new DIMMs in another machine if possible. Martin Kurr email [log in to unmask] > From: Syd Wyncoop[SMTP:[log in to unmask]] > Subject: [PCBUILD] 64 MB SDRAM > I just installed 2 168 pin 64 MB SDRAM boards into a 233 mhz Pentium MX > motherboard and the board only recognizes a total of 32 mb RAM. I know > each board is registering as 16 MB because that's what I get when only > one board is installed. The PCBUILD web site always needs good submissions. If you would like to contribute to the website, send any hardware tech tips or hardware reviews to: [log in to unmask]