Windows 10 upgrade has trashed my laptop

After trying the Win 7 - Win 10 upgrade on my old Compaq knockabout laptop, and it going fine other than completely loosing the Internet Security suite (COMODO), I decided to upgrade my main laptop, an Acer Travelmate 5740.

The upgrade itself went fine; however, on booting into Windows 10, the first thing I noticed was that I was down to a basic Microsoft Video driver, offering 1024x768 resolution, instead of the native 1366 x 768. No problem, I though, I'll just hop online and download the latest driver. And then I noticed that I had "limited" WiFi connectivity - on all networks I tried to connect to.
I tried forgetting the networks and reconnecting - it can see them all OK, and "connect" to them, but Limited (this on a network with at least 7 other devices connecting fine (Win 7, Win 10, Linux, MacOS, Android). I looked for the old VPN software issue: not present. I reset the TCP/IP stack - no change. I connected to a LAN cable - no connection. Both adapters are correctly identified, although the WiFi adapter shows as "shared" although no sharing tab appears in properties. And ipconfig only displays "Windows IP configuration" with no IP information. Diagnosis shows a driver problem (no kidding), but can't fix it.

And the Acer site shows no Windows 10 drivers for the laptop.
I'm tempted to suggest spent more time on the logo than on the OS.
Any suggestions?
Thanks

Open the network and sharing center, click on the left column change adapter settings. How many network adapters are showing? Try disabling all of them except for your actual physical wireless and LAN adapters, reboot, go back and see if they are still disabled and if you have internet access.

Thanks NavyLCDR.

There are only two adaptors listed, both Broadcom: a NetLink Gigabit Ethernet and an 802.11n.

boniface53 said:

Thanks NavyLCDR.

There are only two adaptors listed, both Broadcom: a NetLink Gigabit Ethernet and an 802.11n.

What about assigning static IP addresses to it in the IP4 properties under the WiFi adapters? Seems like it is not pulling IP addresses from the router's DHCP server.

Tried that: still showed problems with drivers (both ethernet & Wifi) even after installing the latest drivers from the Broadcom site. And ifconfig showed nothing.

Maybe turn IPv6 off for the network adapters?

The only other thing would be to do another upgrade. Go back to a previous OS, make sure everything is working. Use an ISO file for the upgrade and this time before doing the upgrade make sure the computer cannot connect to the internet. No cable connected to Ethernet and disable the wireless adapter (even just in Windows if that is all you can do). Try the upgrade without connection to the internet, then when it is up and running plug a cable into the Ethernet adapter.

I've previously tried turning of IPV6, with no result. The Acer utility showed the LAN and WiFi devices were Broadcom; the new drivers I installed were from Broadcom, and described as
"NetLink®/NetXtreme® I Desktop/Mobile/Server (x64) This driver does not support BCM5700, BCM5701 and BCM5702 devices. The following Operating Systems are supported: Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10 and Windows 2008, Windows 2008 R2, Windows 2012 and Windows 2012 R2.


BCM5705 , BCM5703 , BCM5721 , BCM5751 , BCM5788 , BCM5704 , BCM5752 , BCM5789 , BCM5723 , BCM5761 , BCM5787 , BCM5755 , BCM5722 , BCM5754 , BCM5718 , BCM57765 , BCM57761 , BCM5719 , BCM5725 , BCM5762 , BCM5720 , BCM57766 "

Not quite sure whether it's possible to find out if I have one of the unsupported devices.

Right click on the network adapter in Device Manger and click properties. Then click the details tab, scroll down in the Properties dialog box to hardware ids. Copy the top one. Should look something like:
PCI\VEN_10EC&DEV_8168&SUBSYS_3591103C&REV_06

Then google it.

So I booted into Linux, ran lspci, which immediately told me what my chipsets were: and searching identified there are no drivers past Windows 7.

I would have thought that an upgrade process designed for non-geeks would have some sort of process to ensure that an upgrade does not proceed if there are no compatible drivers. The Linux Live DVD identified and loaded the correct drivers and I was immediately able to browse the web,

So I'm rolling back to Windows 7. I guess that's a solution of sorts.