Well unfortunately there are age restrictions and FBI background checks that have been deemed constitutional in regards to the 2nd Amendment, so I don't think that'll get you out of PC age checks, might get you NICs checks for internet though if your goal is restricting it further. That would also make import PCs have to follow 922(r) compliance which we do not have the manufacturing for.
Imagine though; CA, VA, MA, CT, IL, NY, NJ, WA, all limit you to 10gb of ram, no more of those "high capacity" sticks. Permit to simply own a PC in IL, MA, NY, NJ. Laptops can't be bought out of state or they have to be shipped to a licensed PC dealer in your state, Desktops depends on state. Private sale of PCs in some states is legal, but in others requires you both to visit a licensed PC dealer and pay a fee. In CA only PCs on "the roster" by name and individual model are legal, unless you work for the government then you can have whatever. In some states you don't need a license to carry a laptop, in some states you do but all it takes is a course on responsible internet use, in some states you have to demonstrate your need to carry a laptop. If you don't have a license to carry, you must lock it in your trunk until you get to the nearest Starbucks® Internet Range.