If after installing creators update internet stops working, open the device manager and check if the drivers are showing errors. Probably you see yellow exclamation marks and multiple entries for the same driver. If you check the error code you will probably have this error [Code 12: This device cannot find enough free resources that it can use.]
This is linked to 945GM chipset, a popular chipset 10 years ago with many intel dual core CPUs. It seems that it is not fully supported with windows 10 creators update. Hopefully Microsoft will fix this issue.
A possible solution that has been found to work for many people is to plug something into the pcmcia slot. There are cheap usb pcmcia adapters, so getting one of those adapters may be a way to make the laptop work again and get a few extra USB ports. Why inserting a pcmcia card would solve the issue is really weird, but it does.
Another option is to roll back the installation. Press shift key while clicking on restart. Choose troubleshooting and then click on [Go Back To Previous build]. The previous build will only be supported for 18 months, so you may again try after a few months if the creators update is already fixed.
To avoid the creators update from installing automatically you can use the instructions bellow and choose [defer feature updates]
https://www.windowscentral.com/how-delay-windows-10-creators-update-your-pc-and-why