I guess you should be using 64 bit OS. 32 bit OS runs upto 4GBAlso note the following OS Specs Limitation. - Starter: 8GB - Home Basic: 8GB - Home Premium: 16GB - Professional: 192GB - Enterprise: 192GB - Ultimate: 192GB Ralph On Thursday, January 21, 2016 3:44 PM, Maisiba Bravo via skunkworks <skunkworks@lists.my.co.ke> wrote: Hi Skunks, I just upgraded my win 7 PC ram from 4gb (3.37 usable) to 16gb but the usable is still stuck at 3.37. I have gone thru all relevant forums but none has helped yet. I.e -Win memory diagnostic -Advanced boot options (unchecking max memory) Attached snapshots. Anyone ever had simillar issue & managed to resolve? Please share. Bravo 0726506461 _______________________________________________ skunkworks mailing list skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------ Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke