Hi Janice K_24,
· Have you made any changes on the computer prior to the issue?
Follow these methods.
Method 1: Follow the steps:
a) Unplug the cable/DSL modem.
b) Unplug the wireless router.
c) Wait 60 seconds and then plug in the modem.
d) When the modem is completely online, plug in the wireless router.
e) On the computer, open a command prompt.
f) Once you have a command prompt, first type “ipconfig /flushdns”.
g) Next, type “ipconfig /release”.
h) Then, type “ipconfig /renew”.
Method 2: Disable the security software temporarily.
Note: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you should not disable your antivirus software. If you do have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you are connected to the Internet or a network during the time your antivirus software is disabled, your computer is vulnerable to attacks.
Method 3: Follow the steps from the article to reset the internet protocol.
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357
For reference:
Wired and wireless network connection problems in Windows