8.00 GB Installed (2.66 GB Usable) Ram on my Toshiba

Posted on 2011-10-21
Last Modified: 2012-05-12
Hi there,

I've recently installed an extra 4GB RAM Module into my Toshiba R830, however it says only 2.66 GB Usable.
First of all I looked in the BIOS for Memory Remapping but cant see anything. So then I opened up my laptop and swapped the modules around - but still same message in Computer Properties 2.66 GB Usable!

Any ideas?


ps. Im running Windows 7 Pro x64 on Toshiba R830 with an i5-2520M
Question by:Luke_fleming
    LVL 8

    Expert Comment

    Is all the memory the same?
    LVL 1

    Author Comment

    Its the same speed and spec but different Manufacturers
    LVL 8

    Expert Comment

    I've seen this happen with different manufacturers. I'm not guaranteeing it but I would try getting memory from the same  manufacturer.
    LVL 7

    Expert Comment

    is it definately x64 windows 7?
    how much memory is repotrted in the bios? or on the boot splash?
    LVL 10

    Expert Comment

    by:Arman Khodabande
    Double check that you have 64bit windows!
    I guess you're using a 32bit (x86) windows ! 32bit windows can't support more than that!
    For using all of it install a 64 bit (x64) windows!
    LVL 1

    Author Comment

    ps. Im running Windows 7 Pro x64 on Toshiba R830 with an i5-2520M

    Yes im running 64 bit!

    In the BIOS 8GB is present.

    LVL 12

    Expert Comment

    its very interesting question and its certainly connecting to OS in first look not with hardware as u confirmed 8gb is there

    Can you please paste output of systeminfo command in cmd?

    if you have any linux live cd of ..say ubuntu 64-bit then try to boot via it without installing check if its still saying 2.66 gb or not if it still saying 2.66 then iam guessing that yours bios "may' have option of disable/enable 64 bit computing

    LVL 1

    Author Comment

    Here's the system info:   (I forgot actually I have Windows 7 Ultimate)

    OS Name:                   Microsoft Windows 7 Ultimate
    OS Version:                6.1.7601 Service Pack 1 Build 7601
    OS Manufacturer:           Microsoft Corporation
    OS Configuration:          Member Workstation
    OS Build Type:             Multiprocessor Free
    Registered Owner:          admin
    Registered Organization:
    Product ID:                00426-948-2420992-85053
    Original Install Date:     26/08/2011, 09:26:40
    System Boot Time:          21/10/2011, 20:51:34
    System Manufacturer:       TOSHIBA
    System Model:              PORTEGE R830
    System Type:               x64-based PC
    Processor(s):              1 Processor(s) Installed.
                               [01]: Intel64 Family 6 Model 42 Stepping 7
    el ~2491 Mhz
    BIOS Version:              TOSHIBA Version 3.10  , 25/08/2011
    Windows Directory:         C:\Windows
    System Directory:          C:\Windows\system32
    Boot Device:               \Device\HarddiskVolume1
    System Locale:             en-gb;English (United Kingdom)
    Input Locale:              en-gb;English (United Kingdom)
    Time Zone:                 (UTC) Dublin, Edinburgh, Lisbon, London
    Total Physical Memory:     2,721 MB
    Available Physical Memory: 1,196 MB
    Virtual Memory: Max Size:  5,441 MB
    Virtual Memory: Available: 3,540 MB
    Virtual Memory: In Use:    1,901 MB
    Page File Location(s):     C:\pagefile.sys
    Domain:                    wits.local
    Logon Server:              \\WIRED
    Hotfix(s):                 52 Hotfix(s) Installed.
                               [01]: KB974405
                               [02]: 982861
                               [03]: KB2425227
                               [04]: KB2476490
                               [05]: KB2479943
                               [06]: KB2484033
                               [07]: KB2488113
                               [08]: KB2491683
                               [09]: KB2492386
                               [10]: KB2503665
                               [11]: KB2505438
                               [12]: KB2506014
                               [13]: KB2506212
                               [14]: KB2506928
                               [15]: KB2507618
                               [16]: KB2508272
                               [17]: KB2509553
                               [18]: KB2510531
                               [19]: KB2511250
                               [20]: KB2511455
                               [21]: KB2515325
                               [22]: KB2518869
                               [23]: KB2522422
                               [24]: KB2524375
                               [25]: KB2532531
                               [26]: KB2533552
                               [27]: KB2534111
                               [28]: KB2536275
                               [29]: KB2536276
                               [30]: KB2539635
                               [31]: KB2541014
                               [32]: KB2544893
                               [33]: KB2545698
                               [34]: KB2547666
                               [35]: KB2552343
                               [36]: KB2556532
                               [37]: KB2559049
                               [38]: KB2560656
                               [39]: KB2562937
                               [40]: KB2563227
                               [41]: KB2563894
                               [42]: KB2564958
                               [43]: KB2567053
                               [44]: KB2567680
                               [45]: KB2570791
                               [46]: KB2570947
                               [47]: KB2572077
                               [48]: KB2579686
                               [49]: KB2586448
                               [50]: KB2607712
                               [51]: KB2616676
                               [52]: KB976902
    Network Card(s):           4 NIC(s) Installed.
                               [01]: Intel(R) Centrino(R) Advanced-N 6230
                                     Connection Name: Wireless Network Con
                                     DHCP Enabled:    Yes
                                     DHCP Server:
                                     IP address(es)
                                     [02]: fe80::41cd:3648:68cc:976
                               [02]: Intel(R) 82579LM Gigabit Network Conn
                                     Connection Name: Local Area Connectio
                                     Status:          Media disconnected
                               [03]: Ericsson F5521gw for TOSHIBA Mobile B
    etwork Adapter
                                     Connection Name: Mobile Broadband Con
                                     Status:          Hardware not present
                               [04]: Iomega Virtual Ethernet Adapter
                                     Connection Name: Local Area Connectio
                                     Status:          Hardware not present

    I've had another look through BIOS as I dont have a live cd for anything that might resemble x64 capability and found nothing!
    LVL 1

    Accepted Solution

    Run msconfig and check this settings

    LVL 1

    Author Comment

    Sorry forgot to mention I have dont that but when you select Maximum it only gives you 4066 make it any higher (manually by typing) click ok then go back in and it resets it to 3976 !
    LVL 1

    Author Comment

    I removed the mark... now I have 7.88 GB usable.... is this normal?

    LVL 1

    Expert Comment

    However it will unmarked. Maybe memory remapping disabled  in BIOS. Did you check it?
    BIOS > Memory Remapping > Enable
    LVL 1

    Expert Comment

    Oh my God! , it completely done =) 22 mb gone for page cache memory, is it problem ;)
    LVL 50

    Expert Comment

    Luke_fleming--The word "usable" is used confused on the Windows tab.  See the last few posts here especially those from BobH
    "The 'no amount usable' means that what it said before about 3.5gb usable
    is that there is no 'amount usable' now. So the pc is running on full 8gb"
    LVL 10

    Expert Comment

    by:Arman Khodabande
    Nice job mrtky!
    Check your "Performance" tab of Task manager to see if your Total "Physical memory" is ~8192 mb?!
    You're good to go  . . .

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