Windows 7: Troubleshooting Internet Explorer Issues

a. Click the Tools button, and then click Manage Add-ons.
b. Under Show, click All add-ons.
c. Click the add-on you want to disable, and then click Disable

2. To delete ActiveX controls

1.Open Internet Explorer by clicking the Start button , and then clicking Internet Explorer.
2.Click the Tools button, and then click Manage Add-ons.
3.Under Show, click Downloaded controls to display all ActiveX controls.
4.Click the ActiveX control you want to delete, and then click More information.
5.In the More Information dialog box, click Remove.

1. Close any Internet Explorer or Windows Explorer windows that are currently open.
2. Open Internet Explorer by clicking the Start button , and then clicking Internet Explorer.
3. Click the Tools button, and then click Internet Options.
4. Click the Advanced tab, and then click Reset.
5. Select the Delete personal settings check box if you would like to remove browsing history, search providers, Accelerators, home pages, and InPrivate Filtering data.
6. In the Reset Internet Explorer Settings dialog box, click Reset.
7. When Internet Explorer finishes applying default settings, click Close, and then click OK.
8. Close Internet Explorer.

Your changes will take effect the next time you open Internet Explorer.

You could use Mircosoft Fixit Tool to do it for you.

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Click this link to download it Reset Internet Explorer settings

Note: This will delete personal settings, some webpages that rely on previously stored cookies, form data, passwords, or previously installed browser add-ons might not work correctly. Resetting Internet Explorer's settings is not reversible.

Follow this article Video freezes or crashes in Internet Explorer or Windows programs

Start | CMD | Right Click and Run as Administrator

netsh winsock reset catalog (resets winsock entries)
netsh int ip reset reset.log (resets TCP/IP stack)

Reboot the System then Test it.

7. Quite frequently, internet connection problems can be traced to a corrupted DNS cache. Resetting or Flushing this cache is an easy fix to many of these problems

Start | CMD | Right Click and Run as Administrator

ipconfig /flushdns
ipconfig /release
ipconfig /renew

Then see if you can connect to any websites.

Hope this helps,
Captain