Salve , prima non avevo questo problema , da un pò di tempo succede che i sistemi operativi installati sul mio pc rilevano solo metà ram e cioè 16 gb di ram su 32 gb di ram , la scheda madre è la asus p8z77-v deluxe il processore l'intel i7 3770 , in pratica il bios e windows 8.1 e ubuntu rilevano 32 gb di ram ma se uso tool come cpu-z rilevano 32 gb di ram , riporto un dmidecode --type memory fatto su ubuntu :
codice:
# dmidecode 2.12# SMBIOS entry point at 0x000f04c0
SMBIOS 2.7 present.


Handle 0x005F, DMI type 17, 34 bytes
Memory Device
    Array Handle: 0x0060
    Error Information Handle: 0x0063
    Total Width: 64 bits
    Data Width: 64 bits
    Size: No Module Installed
    Form Factor: DIMM
    Set: None
    Locator: ChannelA-DIMM0
    Bank Locator: BANK 0
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1600 MHz
    Manufacturer: 029E
    Serial Number: 00000000
    Asset Tag: 9876543210
    Part Number: CMZ32GX3M4X1866C10
    Rank: 2
    Configured Clock Speed: 1600 MHz


Handle 0x0060, DMI type 16, 23 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 32 GB
    Error Information Handle: 0x0061
    Number Of Devices: 4


Handle 0x0062, DMI type 17, 34 bytes
Memory Device
    Array Handle: 0x0060
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 8192 MB
    Form Factor: DIMM
    Set: None
    Locator: ChannelA-DIMM1
    Bank Locator: BANK 1
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1600 MHz
    Manufacturer: 029E
    Serial Number: 00000000
    Asset Tag: 9876543210
    Part Number: CMZ32GX3M4X1866C10
    Rank: 2
    Configured Clock Speed: 1600 MHz


Handle 0x0065, DMI type 17, 34 bytes
Memory Device
    Array Handle: 0x0060
    Error Information Handle: 0x0066
    Total Width: 64 bits
    Data Width: 64 bits
    Size: No Module Installed
    Form Factor: DIMM
    Set: None
    Locator: ChannelB-DIMM0
    Bank Locator: BANK 2
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1600 MHz
    Manufacturer: 029E
    Serial Number: 00000000
    Asset Tag: 9876543210
    Part Number: CMZ32GX3M4X1866C10
    Rank: 2
    Configured Clock Speed: 1600 MHz


Handle 0x0067, DMI type 17, 34 bytes
Memory Device
    Array Handle: 0x0060
    Error Information Handle: No Error
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 8192 MB
    Form Factor: DIMM
    Set: None
    Locator: ChannelB-DIMM1
    Bank Locator: BANK 3
    Type: DDR3
    Type Detail: Synchronous
    Speed: 1600 MHz
    Manufacturer: 029E
    Serial Number: 00000000
    Asset Tag: 9876543210
    Part Number: CMZ32GX3M4X1866C10
    Rank: 2
    Configured Clock Speed: 1600 MHz
Cosa può essere? come posso risolvere? vi posto alcune immagini che possano essere d'aiuto :
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Grazie mille per l'aiuto