Thank you for sharing this information, we are glad that you made it work, considering that the Intel® PRO/Wireless 3945ABG Network Connection is not officially supported by Microsoft Windows® 10.
Hi, I have the same problem with my old Acer Aspire 5920g, which uses the Intel PRO/Wireless 3945ABG adapter. I upgraded it from Windows 7 to Windows 10, and now the wireless does not work.
I've tried the solution listed above, but it hasn't made a difference. I realise that this adapter is now unsupported, but I wondered if you had any advice as to how to fix this issue, maybe a replacement driver or something?
Since the Intel® PRO/Wireless 3945ABG Network Connection is not supported by Microsoft Windows* 10, we would not expect it to work properly. Intel does not provide drivers for this configuration, and we are not aware of possible workarounds.
If Windows* is not able to locate a driver from Microsoft* using Windows* Updates, then we would advise you to check with the Computer Manufacturer Support to confirm if your system is meant to be used with Windows* 10.
I'd like to let you know that workaround with powershell script works for windows 10 as decribed here:
you are aware from now on...
The manufacturer of your computer is the best source to determine which Intel® Wireless Adapters are supported in your PC. Please contact the Computer Manufacturer Support to obtain this information.
Once you have the list of adapters supported by your computer, you can check the following document to know if they are compatible with Windows 10*:
I have acer 5920G and I use the DriverPack Solution DriverPack Solution - Best Drivers installation Software.
Just install all proposed drivers, reboot the system. Everything works fine.
Win 10 Pro, 32bit
No wifi after upgrading from Win 7 Ultimate to Win 10 and Device Manager displayed the following message in the Device Properties dialog box, on the General tab, in the Device Status text box: "This device cannot find enough free resources that it can use. If you want to use this device, you will need to disable one of the other devices on this system. (Code 12)".
The following actions rectified the problem and might be worth a try for other people. One thing it demonstrates is that the Intel legacy wifi driver (Intel(R) PRO/Wireless 3945ABG Network Connection) works in Win 10 although no longer supported by Intel or Microsoft. In my case it involved disabling PCMCIA drivers (I do not use the PCMCIA card reader but there could be other options not tested). It was tested and worked in a Fujitsu Tablet ST5112 with a Centrino processor, running Win 10 Pro, 32bit as follows:
1. Go to Device Manager
2. Select PCMCIA and DISABLE all drivers individually
3. Select Network Adapters and UNINSTALL: Intel(R) PRO/Wireless 3945ABG Network Connection
4. Reboot and Windows will automatically reinstall the Intel driver under the revised configuration and you should have wifi
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I probably found the solution for the Wireless disconnect after waking up from sleep mode with the Intel 3945ABG. I simply disabled the "Computer can disable the device to save energy" option. The option can be found in the Network Adapter configuration at configure - Energy saving options. As I have a German OS, the english terms might be different, but you will get the respective options by its meaning :-).
I had the same problem. I didn't except it but this solution worked: Problem with the network adapter - Intel(R) PRO/Wireless 3945ABG Network Connection
In a short - uninstalling drivers of wireless adapter (and CIR - infrared sensor).
I'm sure that Intel will not mind me mentioning that the simplest solution to the Acer Aspire 5920 and Windows 10 wifi compatibility issue is to replace the Intel mini-PCIe adapter/card with the equivalent Broadcom card (the ethernet driver in this PC is already Broadcom). The equivalent wifi card is the BCM94311MCG at the dizzy cost of £4.00 from eBay. Very easy to fit (see YouTube) and installs perfectly and quickly DURING AND AFTER boot (so give it a chance) and assuming you have your ethernet cable fitted and working.
I spent hours and hours puzzling over this workaround only to wake up the next day feeling fresh with inspiration.
Works like a dream. Out of interest I also upgraded the RAM to 2 x 2GB PC2-5300 and the CPU to 2.4/3/800 Intel T8300 SLAYQ.