A:AnswerIt depends on your computer if it’s one of the large name brands most the time they Sauter the parts on so you have to be careful of removing the parts. You won’t know to open up the computer. For me it wasn’t a problem because I purchased a gaming computer with non-soldered parts. So I’ve been able to upgrade my ram, my video card and add some stuff later but that’s not an option for all computers
A:AnswerWithout knowing more it'd be hard to guess your issue. Have your made sure the drivers for your network devices are installed or not corrupted? Try doing a windows update while tethered, you might have a bad driver or revert to a previous driver. Check for this under device manager. Right click on the windows logo on your task bar at the bottom and it'll show device manager as an option.
A:AnswerLook up your device model, it should tell you if there's room for another drive or what kind of drive should be installed to replace the existing drive. Actually "expanding the drive" wouldn't be possible but adding might work like you need.
A:AnswerMost likely not but look into usb dongles. Very few laptops let your customize them. Mostly all your can do is add a drive and ram. tp link has a dongle that's sub 20 dollars right now on sale. and it'll work in a usb 2.0 port.