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. 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 Related resources 8GB Total, 3.99 GB " Usable " - Forum 8gb installed 3.99 gb usable - Forum 8.00 GB installed RAM , only 3.99 GB usable ? - Forum 6.00 GB of Ram ( 3.99 GB usable ) - Forum Installed ram 8gb usable only 3.41gb...? - 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. bob100684 August 25, 2011 5:07:57 AM no chance you're running a 32 bit os? xGrunt21 September 12, 2011 3:09:54 PM Best answer selected by xGrunt21. 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. Can't find your answer ? Ask ! Publish Related resources: ForumI have 8gb of RAM but only 1gb is usable Forum16GB Ram and only 8GB usable ForumWindows recognises 8gb RAM but only 3.96gb usable ForumWin7 32bit 8gb RAM shows only 3.4gb usable Forum8GB RAM but only 3.95 usable Forum3.95 RAM usable of the 8GB Forum[Memory]Win 7 64 8GB RAM installed 4 usable ForumOnly 3.25GB usable RAM of 8GB Forum8GB RAM installed. Only 7.69GB usable in windows 7 64bit ForumRAM problem, 8gb installed 4gb usable Please Help ForumWhen we finally can’t attained athletic subject, ForumLaptop RAM 2gb+4gb Recommended? ForumUpgrade RAM question ForumMotherboard & Ram, Help? Forum[Solved] RAM More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !