Why is my computer doing this?

[Mousa]

If your browser is IE, then do the following:

1- Open your browser & go to Internet Options
2- Click on General tab.
3- Click on Settings under Tabs.
4- Click on Restore defaults and then click OK.
5- Restart your IE.

If that didn't help, then do the following:

1- Open your browser & go to Internet Options
2- Click on Advanced tab.
3- Click on Reset under Reset Internet Explorer settings.
4- Click on Delete personal settings ( If you want ) then click on Reset.
5- Click OK to close Internet Options dialog box.
6- Restart you PC.