Hi Judy,
If you get no results using kemical's very good suggestions here. There are some things you can do if you can't get your new computer to work on your wireless network.
First, try returning your PC back to your place of purchase, if it's a retail store such as Best Buy, or Frys, or Staples. They may be able to help you as they all have Tech repair departments. Ordinarily, computer retailers such as Costco and Walmart will simply refer you to the manufacturer (Lenovo) as they don't typically have repair departments with Techs on hand.
Since your computer is brand new, usually the only way a retailer will fix it for you, is if you bought some kind of Protection Plan (e.g.: Extended Warranty) from the store you purchased your PC from; usually 2-3 yrs. or longer. If you did not, most likely they will blow you off and tell you to call Lenovo (the manufacturer). If you didn't buy an Protection Plan, you will have to call Lenovo, and go through a lengthy phone troubleshooting session where the Tech will try to fix it remotely for you. If he cannot connect to the Wi-Fi or via a Cable (Ethernet) he will most likely ask you to box it up and send it back to the factory. This will cost you $60 for shipping and insurance, and you should make certain that you insure the PC for the
FULL PURCHASE VALUE YOU PAID FOR THE COMPUTER!! If you don't and the carrier you use to ship loses or damages it, you'll be responsible for that repair or replace cost. Good news here is that when Lenovo finishes the repair they will ship back to you on their dime. So, you only have to pay 1-time shipping.
Of course, if you did
NOT buy your PC in a retail store (brick & mortar), then you have to deal with an online store or buyer such as Amazon or eBay. You'll need to contact the seller, and go through a return procedure, which is usually not too bad. Depending on the store policies of the online seller, don't expect to get a new PC, but rather they will most likely repair your broken PC, and if it's beyond repair they will replace with a similar or identical item (PC), but, often if they must replace, they will send you back a REFURBISHED model either the same as you had or similar specs. So, don't be surprised if this happens! The last thing the manufacturer wants to do is to replace your PC with a brand new one, as they will lose money that way.
Another thing you can try, is to take your PC over to your friend's house where you borrowed their computer to download the wireless driver, and ask them if they wouldn't mind trying to connect your PC to their wireless network if they have one. If it works, then you know the PC is actually Ok, but you have a problem with
YOUR network, such as a failed Router or Modem/Router. You can try resetting the Router, which you can obtain instructions from using your friend's computer via their support website; such as Cisco/Linksys or Netgear. If this still doesn't fix it, you'll need to hire a good Tech who has home networking skills to come out to your home and fix the problem with your home network. Often, it's a simple router replacement.
Let us know how it goes.
Best of luck,
<<<<BIGBEARJEDI>>>>