I've just installed windows 7 RC. Computer properties reports installed memory 4gb (3.5 available). It seems the same behavior Vista had before SP1. Does anybody know if this issue will be solved in future releases? Thanks Bye

This isn't an issue that needs to be resolved. Instead of forcing me to explain it here, please read this very exhaustive explanation what's happening with your RAM: http://blogs.technet.com/markrussinovich/archive/2008/07/21/3092070.aspx.Mobile AMD64 3000+, VIA Apollo K8T800 chipset, 1 G RAM, ATIRadeonMobility 9700, 20x DVDRW, C:XPSP3 (55G),D:WIN7 (25G),F:DATA (250G)

If you are using a 86x version is one of the limits, if you install the 64x version if possible, the computer will report the complete 4GB or more if you have, it is a problem with the Physical Adress Extension http://support.microsoft.com/default.aspx?kbid=291988