32 GB ram installed 26 GB usable Windows 8.1 64 bit Tags: RAM Windows 8 Memory Last response: March 5, 2014 7:57 PM in Memory Share rscentral March 5, 2014 7:49:41 PM 32 GB ram installed only 26 GB usable in windows 8.1 64 bit. More about : ram installed usable windows bit Reply to rscentral IRyannHD March 5, 2014 7:50:54 PM Then one of your ram ports or sticks are faulty, assuming you have 4x8. Reply to IRyannHD m 0 l EasyLover a b * Windows 8 a c 81 } Memory March 5, 2014 7:57:23 PM Pl confirm are you using built-in graphics card or dedicated graphics card? Run memtest86 on your RAM and post the result here. Also provide CPU-Z [Memory Tab] values here. Reply to EasyLover m 0 l Ask the community Post an answer Related resources Solved***URGENT*** 4 Months passed, no solution! 8 GB RAM recognized by BIOS and Windows 8.1 64 Bit, only 3.9/4080 MB usable! Help! Forum Solved3.45GB usable with 6GB RAm in Windows 8.1 (64bit) help. Forum Have 4GB installed ram but only 2.75GB usable Windows 8.1 pro x64 Forum 8 GB RAM, says 4 in BIOS, 3.9 usable in Windows 8.1 64 Bit Forum Solved14GB RAM installed but only 7.98GB usable Windows 7 64-bit Forum Solved8GB RAM installed Windows 8 64bit says (3.9 GB usable). Help! Forum Windows 7 Home Premium 64-bit Laptop, 6GB RAM installed 3.99/4GB usable Forum 8GB RAM installed. Only 7.69GB usable in windows 7 64bit Forum Installed memory ram 8 gb usable 2 66 gb in window 7 32bit Forum Asus P5LD2-VM-CR: Windows 7 64bits 4GBram only 3.2gb ram usable Forum SolvedWindows 7 64 Bit 4GB installed but only 3.48 usable Forum 8gb of memory only 3.98 usable - windows 8.1 64bit operations system Forum 8.00GB memory (3.48GB usable) Windows 8.1 Professional (64-bit) Forum Solved4 gb installed but only 3.5 usable in 64 bit windows 7 Forum Solved4GB of RAM, only 3GB detected (1.75 usable) 64 BIT WINDOWS Forum Windows 8.1 says 8.00GB of RAM installed only (3.99GB of RAM usable) Forum Win8 32 bit sees 8 GB RAM (usable 3.5 GB) but 64 bit restarts on 8 GB of RAM. Please help. Forum New Heatsink/fan installed, memory now shows 3.9 usable of 8 GB RAM installed, 4.1 hardware reserved (Windows 8.1) Forum Solved Installed Memory (RAM): 12.00gb (3.25gb usable) 64-bit. Help! Forum Solvedwhat to do to extend my 8gb ram in 32 bit windows 8.1 Forum More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !