Hi I'm having difficulty installing drivers to Dell E7740 For example the Chipset driver or network driver, it says "The procedure entry point AddDllDirectory could not be located in the dynamic link library KERNEL32.dll" I think a windows 7 update would solve it but I am not sure how without the Internet on the laptop.. In the past faced with a similar issue, I used a USB WiFi adaptor though I can't find one right now.
Try updating your install first with something like SimpliX Pack. EDIT: I actually know why you're getting that error: you need the C++ Redistributables. Try this: https://tiny.cc/vcredist