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Win7 system, can not read 8G memory

Asked by: Scott 220 views Hardware August 26, 2018

I am an 8G memory stick, but the installation memory is only 4 g, and only 3.45G is available. I can't read this installation, what's going on?

Addition: I am a 64-bit system, win7 Ultimate, 64-bit. Installed with a deep installer with one button,

21 Answers

  1. +2Votes  

    is the memory stick problem, it is impossible to turn 8G into 4g 

    Ann Evans- August 26, 2018 |

  2. +6Votes  

    The current win7 is divided into two categories: one is win7 32-bit and the other is win7 64-bit. The win732 computer uses 32 address lines, then the memory address that can be represented. The maximum is 2 to the 32nd power b, converted to Gb is 4G, physical address is 0000 ~ FFFF (hexadecimal). That is 4Gb of its maximum recognizable memory, but the system itself needs to occupy a certain amount of memory, and some restrictions in actual use, the maximum memory that Win7’s 32-bit system can use is 3.25G. The win764 bit uses 64 address lines, and the theoretical maximum memory that can be recognized theoretically is 2 to 64th power b, which is 17179869184GB. However, it is impossible to use such a large memory capacity at present, so Win7’s 64-bit system development takes into account the running speed problem, does not let the computer support such a large memory, and its maximum supported memory varies according to the version: windows 7 Home Basic 64-bit (win7 home version 64-bit) 8Gwindows 7 Home Premium (win7 home premium 64-bit) 64-bit 192GB Enterprise 64-bit and Ultimate 64-bit support 192GB In addition, the memory size that the computer can use is also related to the motherboard, mainly Northbridge memory type and number of memory slots, these data can be reflected from the motherboard model. To query the maximum supported memory memory of your computer, search for the motherboard model you are using and find out how much memory the motherboard supports. In summary, only 64-bit win7 can recognize 8G memory.

    Steven- August 26, 2018 |

  3. +3Votes  

    Two possibilities 1 is a fake 64-bit system   2 is that the motherboard has a memory stick that the motherboard cannot recognize

    David Wilson- August 26, 2018 |

  4. +4Votes  

    Try as follows Try, if it is not a system version problem, do not want to change the system to make use:

    1, start – run, enter msconfig, open the system configuration dialog.
    2, click the boot tab, click the “Advanced Options” button in the middle to open the boot options dialog.
    3, remove the check mark of the largest memory, determine and restart.


    Lisa Hill- August 26, 2018 |

  5. +8Votes  

    If you are sure that you have not installed the wrong 32-bit, then one of the memory may not be inserted.

    Douglas- August 26, 2018 |

  6. +4Votes  

    Check the system first, then whether the memory itself has quality problems or the frequency motherboard does not support

    Patricia Lewis- August 27, 2018 |

  7. +5Votes  

    may not be memory

    Edward Williams- August 27, 2018 |

  8. +5Votes  

    If the memory is two, it may be broken or the slot is broken. Check it out. There is only one word, there is a problem with the sliver, look for sales,

    Edward Adams- August 27, 2018 |

  9. +7Votes  

    WIN7 is 8G, you may have bought a fake memory

    Ruth- August 27, 2018 |

  10. +2Votes  

    A few memory, if it is one, then you install it into a 32-bit system~~~~~~~~~

    Martha- August 27, 2018 |

  11. +1Votes  

    It may be a memory stick problem

    Mark Walker- August 28, 2018 |

  12. +5Votes  

    I suggest you try to get the memory stick to another computer. It feels like there is a problem with the memory stick.

    Mark Patel- August 29, 2018 |

  13. +1Votes  

    Must be installed 64-bit system

    Patricia Lewis- August 29, 2018 |

  14. +2Votes  

    You use 360 ​​optimization masters to download the number of memory on the top of the display gb

    Kevin Martin- August 29, 2018 |

  15. +2Votes  

    The system you installed is 32-bit and can be fully recognized by 64-bit.

    Answer: Press win+R–>Enter msconfig->System Configuration- ->Boot–>Advanced Options–>Check the maximum memory–>Restart the computer

    Anna Patel- August 29, 2018 |

  16. +4Votes  

    The memory module has a problem, it may be broken.

    Helen Brown- August 29, 2018 |

  17. +1Votes  

    It may be that your physical memory has a problem

    Amanda Wood- August 29, 2018 |

  18. +1Votes  

    Then plug the memory and try it. Stop it~ 64-bit system with 8G memory is not The problem is estimated to be a hardware problem

    Thomas Jackson- August 29, 2018 |

  19. +1Votes  

    is two 4g memory, or an 8g memory, the former memory has problems to find the seller, the latter may be incompatible with two memory The order of insertion.

    Jennifer Davies- August 30, 2018 |

  20. +3Votes  

    Unplug and re-plug.

    Virginia Walker- August 30, 2018 |

  21. +2Votes  

    Recommended to reinstall the system

    Donna- August 31, 2018 |