Built in wifi go limited randomly

I have and my warranty is expired D:
 

My Computer

System One

  • OS
    Windows 8.1 64-bit (6.3, Build 9600)
    Computer type
    Laptop
    System Manufacturer/Model
    Lenovo G500
    CPU
    Intel i3-312M @ 2.50GHz
    Memory
    4G RAM
    Graphics Card(s)
    Intel HD Graphics 4000
    Screen Resolution
    1366x768 HD
    Hard Drives
    600G SATA Hard Disc Drive
    Internet Speed
    32Mb/s DL 23Mb/s Ul
    Browser
    Google Chrome
    Antivirus
    Malwarebytes
And all other devices work perfectly
 

My Computer

System One

  • OS
    Windows 8.1 64-bit (6.3, Build 9600)
    Computer type
    Laptop
    System Manufacturer/Model
    Lenovo G500
    CPU
    Intel i3-312M @ 2.50GHz
    Memory
    4G RAM
    Graphics Card(s)
    Intel HD Graphics 4000
    Screen Resolution
    1366x768 HD
    Hard Drives
    600G SATA Hard Disc Drive
    Internet Speed
    32Mb/s DL 23Mb/s Ul
    Browser
    Google Chrome
    Antivirus
    Malwarebytes
Set the "minimum power consumption" to disabled under the driver's advanced options. Also disable pcie link state power management under power options. Hope this fixes your issues since I also have a Broadcom adapter without issues.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64 with Media Center
    Computer type
    Tablet
    System Manufacturer/Model
    Surface Pro 3
    CPU
    Core i5 4300U @ 1.9 GHz
    Motherboard
    Surface Pro 3
    Memory
    8092 MB DDR3-L 1.35 V SDRAM @ 1600 MHz
    Graphics Card(s)
    Intel HD 4400 @ 200 MHz
    Sound Card
    Realtek HD Audio
    Monitor(s) Displays
    Built-in 3:2 display
    Screen Resolution
    2160 x 1440
    Hard Drives
    256 GB SSD + 128 GB micro SD
    PSU
    36 Watt power brick
    Cooling
    Active
    Keyboard
    On Screen Keyboard
    Mouse
    Surface pen
    Internet Speed
    300 / 20 TWC
    Browser
    IE 11 Metro, IE 11 Desktop
    Antivirus
    Windows Defender
Laptop half-mini cards are pretty cheap on Ebay. Or grab one from local shop. Would be worth it to me just to test.

The Atheros AR5BWB222 has been working great for me.
 

My Computer

System One

  • OS
    Windows 8.1 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model
    Acer V3 771G-6443
    CPU
    i5-3230m
    Motherboard
    Acer VA70_HC (U3E1)
    Memory
    8GB DDR3 PC3-12800 (800 MHz)
    Graphics Card(s)
    HD4000 + GeForce GT 730M
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    17" Generic PnP Display on Intel HD Graphics 4000
    Screen Resolution
    1600x900 pixels
    Hard Drives
    Samsung SSD 850 EVO 250 GB
    ADATA SSD SP900 128GB
    PSU
    90 watt brick
    Mouse
    Bluetooth
    Antivirus
    Comodo
    Other Info
    Asus RT-AC56R dual-band WRT router (Merlin firmware). Intel 7260.HMWWB.R dual-band ac wireless adapter.
Also, look at this from Microsoft forum. I know not your computer or adapter but may still apply:

Capture.JPG
 

My Computer

System One

  • OS
    Windows 8.1 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model
    Acer V3 771G-6443
    CPU
    i5-3230m
    Motherboard
    Acer VA70_HC (U3E1)
    Memory
    8GB DDR3 PC3-12800 (800 MHz)
    Graphics Card(s)
    HD4000 + GeForce GT 730M
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    17" Generic PnP Display on Intel HD Graphics 4000
    Screen Resolution
    1600x900 pixels
    Hard Drives
    Samsung SSD 850 EVO 250 GB
    ADATA SSD SP900 128GB
    PSU
    90 watt brick
    Mouse
    Bluetooth
    Antivirus
    Comodo
    Other Info
    Asus RT-AC56R dual-band WRT router (Merlin firmware). Intel 7260.HMWWB.R dual-band ac wireless adapter.
They were already set to that
 

My Computer

System One

  • OS
    Windows 8.1 64-bit (6.3, Build 9600)
    Computer type
    Laptop
    System Manufacturer/Model
    Lenovo G500
    CPU
    Intel i3-312M @ 2.50GHz
    Memory
    4G RAM
    Graphics Card(s)
    Intel HD Graphics 4000
    Screen Resolution
    1366x768 HD
    Hard Drives
    600G SATA Hard Disc Drive
    Internet Speed
    32Mb/s DL 23Mb/s Ul
    Browser
    Google Chrome
    Antivirus
    Malwarebytes
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