Solved 8gb RAM, 3.99 usable Tags: Memory Windows 7 RAM MSI Last response: September 12, 2011 3:11 PM in Memory Share xGrunt21 August 25, 2011 4:25:51 AM Windows 7 64 bit is showing that I have 8 gigs of RAM but only 3.99 usable. Ive got a MSI 970A-G45 mobo, x4 955 BE, 2x4gb 1333 ADATA RAM. Ive tried the RAM is both blue and black slots but get the same results each time. More about : 8gb ram usable abekl a b } Memory a b $ Windows 7 August 25, 2011 4:41:51 AM Sounds like you've got a bunch of ram that's been reserved by hardware. m 0 l Pyree a b } Memory a b $ Windows 7 August 25, 2011 4:43:58 AM Sounds like you have got yourself the famous 4 GB out of n GB usable problem. I am pretty sure this question is asked at least once a day in this forum. Anyway, here you go: msconfig>boot>advances options untick maximum memory m 0 l Related resources 8GB Total RAM (3.99 usable) - Forum 8GB Total, 3.99 GB "Usable" - Forum 8gb installed 3.99 gb usable - Forum Windows 8.1 says 8.00GB of RAM installed only (3.99GB of RAM usable) - Forum The 'ol 8.00 GB of installed RAM/MEMORY but only 3.99 GB "usable" - Forum Can't find your answer ? Ask ! Get the answer Best solution jsanthara a b } Memory August 25, 2011 4:45:17 AM Things to check: 1.) Maximum Memory is unchecked. (msconfig ----> boot ----> advanced options) 2.) Memory Remapping enabled in BIOS. Things to try: 1.) Clear CMOS 2.) Update BIOS 3.) Reseat CPU (it has helped solve this type of problem before) 4.) Make SURE that you are running 64-bit (Sorry, have to say it) Also, did you run memtest? If not you might want to run it for a few hours. Probably not the culprit here, but if nothing else is working then you might want to. Share bob100684 August 25, 2011 5:07:57 AM no chance you're running a 32 bit os? m 0 l xGrunt21 September 12, 2011 3:09:54 PM Best answer selected by xGrunt21. m 0 l xGrunt21 September 12, 2011 3:11:17 PM I went to reseat the cpu and found that one of the prongs was bent, so I RMA it. Got the new one and now I have full 8 gigs of RAM usable. m 0 l Can't find your answer ? Ask ! Publish Related resources 8.00 GB installed RAM, only 3.99 GB usable? Forum 6.00 GB of Ram (3.99 GB usable) Forum SolvedI have 8gb of RAM but I only have 4gb usable. Forum Solved8gb ram installed, only shows 3.95gb usable. Pics inside Forum Solved8gb ram detected, only 2.98 gb usable! Forum Solved3.78 usable out of 8gb ram Forum Solved8gb of RAM, only 3.98 Usable Forum Solved8Gb Ram installed and 3.95GB usable??? PLEASE HELP!!! Forum SolvedLenovo y510p 2.18gb RAM of 8gb usable Forum Solved8GB of RAM only 5.98GB usable?? Forum Solved8GB Of Ram Installed, only 4 showing w/ 3.47gb usable (I think I fixed it) Forum Solved8gb or ram but only 2.92 usable Forum SolvedI have 8GB of RAM, only 4GB is usable? Help please. Forum Solvedi installed 8gb ram (2.99bg usable) and my processor is Intel i5-2500 CPU @ 3.3GHz, ang my video cars is Gforce 9500 GT. Forum Solvedram usable 8gb installed (5.96gb usable) Forum More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !