Hello and Welcome -
Here are some known articles for you to start with -
What is the Knowledge Base(KB) article number(s) of the failing Windows Updates?
This issue might be caused by a program running on the computer that's preventing Windows Update Services (SVCHOST) from accessing the Internet, if computer is connected to a network at work or an incorrect Domain Name System (DNS) setting for the network connection can also cause this error.
I would suggest you to try the steps in the article and check if it helps.
Windows Update error 8024402C
If the issue is still not resolved you may try the steps in the knowledge base article and check.
Unable to install updates in Windows Vista, Windows 7, Windows Server 2008 and Windows Server 2008 R2
You stated that you did a "fresh reinstal the OS", do you mean that you fully reinstalled Windows7 ??
Thank You -