Hi, I have a Pentium 150 on a Rhino 12 motherboard and running Windows 98se. The MB has 4 simm and 1 dimm slots and I had 48mb memory made up of 1x32mb dimm (Pc66) + 4x4mb simm. A friend who was upgrading gave me 1 stick of 64mb dimm (PC100) so I replaced my 32 mb dimm with it, hoping to get 80 mb altogether. On booting up I was surprised to see only 48mb, so obviously only 32 of the 64 mb were recognised. After reading Mr Rode's article I went into setup and disabled Video Bios Shadow but it made no difference. Would someone please help? I don't know much about computers, so please don't go too technical. Thanks. Julie _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp 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