,Japan
Wi-Fi on PCs upgraded to Windows 10 (1709) became unstable.
As a specific symptom, it is no longer possible to automatically connect to a Wi - Fi access point with "☑ Automatically connect" enabled immediately after starting the computer.
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You can connect automatically when you reboot your computer, but once you shut down the computer and start up it will not be able to connect automatically.
Windows 7 now comes up after upgrading preinstalled VAIO to Windows 10.
So old VAIO 10 years ago?
I did not understand how to repair so I left it inconvenient and left it, but I understood that it is due to the power option of Windows 10, so I will leave notes on the repair method.
Cause power option 'fast startup'!
Since I found out that the fast startup function of Windows 10 is involved, I solved the problem when I disabled the fast startup function.The procedure to disable fast startup is detailed in the next section. At the same time, at the end of the sentence, I will add about the behavior when "restart" is selected from the Windows 10 start menu.
Steps to disable fast startup
1. Open the power option
Taskbar> Right-click the power icon> Power Options
2. Selection of power button operation
Power supply option> Select the operation of the power button or select the operation when the cover is closed
3. Change settings that are not currently available
"☑ Enable fast startup (recommended)" is grayed out. To change the setting, click "Change settings not currently available".
4. After unchecking Enable high-speed startup (recommended), click "Save changes"
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5. End of procedure
Please shut down the PC, start up the PC again and check the state of the Wi-Fi access point with automatic connection setting.
About operation after reboot of PC: 2018-10-30
There are two ways to reboot the PC, but if you select "Restart", "Fast startup" will be invalid regardless of the power option setting of the PC.- Start> Power supply> Shut down> Power on (Activate according to power option)
- Start> Power supply> Restart (Activate by temporarily disabling fast startup)
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On Windows 10, a function called "fast startup" that saves the state of the last device, etc. and speeds up startup by loading it is enabled by default.
~ Middle ~
If "fast start-up" is enabled, problems such as failure to recognize newly connected peripheral devices and old standard peripheral devices, failure to apply BIOS setting change, etc. sometimes occur.
:SC2
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