One of my toolbars disapeared.Help told me to

You may be in full-screen mode, please try pressing F11 to exit full-screen mode.

In Internet Explorer, click Tools then select Toolbars and see if the Yahoo Toolbar is checked. If not, check it.
If it is not listed then I would recommend installing it again.

http://help.yahoo.com/l/us/yahoo/toolbar/

Try right-clicking on the "File Edit View..." menu. You shoudl see Yahoo Toolbar as an option. (1) Select it in the dropdown menu (2) you should now see the toolbar in your browser.

go to the customize and control google chrome at the right top corner! then click on option then click on basics there will be a toolbar option check it if helpful dont forget to vote!

Reinstall Yahoo Toolbar ...
Follow this instructions to uninstall yahoo toolbar ->http://help.yahoo.com/l/us/yahoo/toolbar/toolbar8/general/general-07.html .
Next go to http://us.toolbar.yahoo.com/ ,click Download Now! button. and install the toolbar.

Open Yahoo.com scroll to the bottom of the page you will see toolbar where you can download another copy. You can also use this link
http://uk.toolbar.yahoo.com/

I am assuming you already downloaded the messenger, right?

Are you missing the Internet Explorer toolbar that displays the File, Edit, and View menus? If so, you might have moved the Yahoo! Toolbar, or some other toolbar over the IE menu, or you might have gone into fullscreen mode accidentally.
First, make sure you aren't in fullscreen mode. If you are, you'll only see the navigation bar with the Forward, Back, and other buttons at the top of your screen. If that's the case:

1. Press the F11 key on your keyboard.
2. The other toolbars in IE should appear.

You can press F11 as many times as necessary to toggle between normal and fullscreen mode in IE.
If that doesn't solve the problem, you might have accidentally moved one of your other toolbars over the main toolbar. Try the following:

1. Directly to the left of the Y!, you should see a thin vertical bar.
2. Click this bar with the left mouse button and drag the toolbar straight down.
3. Your main IE toolbar should now be visible.

Once your toolbars are how you want them, you can right-click the IE toolbar and select "Lock the Toolbars" to keep them from moving accidentally in the future.
If you're still having problems with your Internet Explorer toolbars, you might need to visit Microsoft's Internet Explorer support website.

to start off go to add/remove programs and uninstall yahoo toolbar. Then go to http://toolbar.msn.com/tour_suite/tabs.aspx to download the msn toolbar. That way no pop up blocker can stop it. About the DSL speed - experience has told me that your dsl modem is bad and replacing it would work. Provided you already did you could to remove spyware/malware using utilities such as SpyBot Defender, Windows Defender, and Lavasoft Ad-aware. All of those programs are free and I would advise you to try those first.