Can't open internet explorer 7

Diagnose Connection Problems With Internet Explorer
Internet connection and network errors can be frustrating and confusing to a casual computer user.
However, Internet Explorer provides a diagnostics tool to help identify and even repair the most common network issues.
This tool is simple to use, organized in steps, and can help get a computer back up and running quickly.

Open Internet Explorer and click on the "Tools" button in the control bar at the top of the window. From the "Tools" menu, select "Diagnose Connection Problems."
A window will appear, displaying the start page of the diagnostics tool.
Follow the instructions to determine the cause of the connection error.
The diagnostics tool will ask a series of multiple-choice questions about the connection problem you are experiencing.
Close all programs and restart the computer.
If you continue to receive an error when attempting to connect to the Internet, check that all cables and power-supply cords for the computer, modem and/or router are properly connected. Then, run the diagnostic tool again.
Call your Internet service provider's technical support phone number if you cannot resolve the error with the diagnostics tool.
The Internet Explorer diagnostics tool cannot repair or reset malfunctioning or failing hardware like modems and routers.

windowsxp using networking expert russel diagnostics mspx
http://www.microsoft.com/windowsxp/using/networking/expert/russel_diagnostics.mspx
Support for Windows Internet Explorer 6, 7, 8, and 9
http://support.microsoft.com/ph/13418 - tab0
Internet crashing
If your Internet Explorer keeps randomly crashing (closing by itself), there may be an add-on or temporary page disrupting the connection.
Every time you browse the web, Internet Explorer keeps track of the websites you visit.
It keeps these pages, along with cookie trackers, in the "Temporary Browsing History" folder. Some websites cause Internet Explorer to crash.
Open the Internet Explorer browser. Go to "Tools > Delete Browsing History."
Hit "Delete All."
Check off the box that says "Also delete files and settings stored by add-ons."
Hit "OK."

Close and reopen the browser.
Disable Add-Ons
Go to "Start > Search."
Type "Internet Explorer" and hit "Enter."
The computer will search for any files with this label.
Double-click on the file that says "Internet Explorer (No Add-Ons)."
This will allow you to browse in IE without any additional plug-ins or add-ons that might be causing the browser to crash.
Reset Internet Explorer
Open the IE browser.
Go to "Tools > Internet Options."
Hit "Advanced." Click on "Reset" and then hit "Enter."
Close and reopen the browser.
You might have to many programs trying to or accessing your computer or the internet at the same time or a virus
Scroll to bottom toolbar (bottom of screen) right click select task manager applications and processes to see you what's running and ticking over
if you see anything you don't need running select end now and you might uninstall that specific
program if you or computer does not require it to run and
some unnecessary programs that could be jamming up your computer
also under processes see what is ticking over in the background again if you see something you
don't need to be running select end now and users you will see who is using your computer
http://100-downloads.com/download.php?p=615
windows xp microsoft security essentials
http://majorgeeks.com/downloadget.php?id=4281&file=1&evp=dbb3b0aebe6a6a4ff18089a6489a5e62 anti malware free edition Win XP/2003/Vista/Windows7

Adding a browser should not effect your internet access.
Do you still have your old browser?
Does it work?
Have you accessed your network connections and checked to see the
condition of your connection?
Did you configure your browser to work on your connection?
--On your browser click TOOLS and go to internet options.
--Check the CONNECTIONS tab
--Click LAN SETTINGS
--Check the box that says "automatically detect settings"
--Uncheck any other box.
If this does not work, u need to provide more info about your network settings.

Check if you have a an Expired Anti-virus or the Firewall of the anti-Virus is blocking the Internet Connection.

If that does not work Reset the Browser,
Click Start>>>Run>>>
type: inetcpl.cpl
Go to Advance Tab and click on Reset Browser.


If that also does not work download and Install Firefox that will work.
from this link:
http://www.mozilla.com/en-US/products/download.html

It appears you have an external hard drive. It should connect to your computer with a USB cable. Make sure the external hard drive is turned on and running before you connect the usb cable to the computer. Some external hard drives have an on/off switch and some do not. you can hear it running if you put your ear close to the case.

When you plug it in, wait a few minutes and the computer should indicate that it has recognized it. (sometimes this does not happen) In any case, after a few minutes, open My Computer (Computer, in Windows 7) (sometimes referred to as Explorer- NOT to be confused with Windows Explorer which is an internet browser). You should see a list of recognized drives including your external hard drive. Doubler click on it and you should be able to see your files.

If it doesn't show in Explorer, the computer might be trying to assign a drive letter to it that is already taken. To fix that, go to Control panel, Administrator Tools, Computer management, Disk Management. You should see your external drive listed and you can assign an unused drive designation to it there. You should then be able to go back to Explorer and see it. You might have to refresh the Explorer screen.

If it is Belkin Then You will need to do the following steps

Step 1 : Connect The Router - Computer ( Wired ) And make sure the modem is not connected to the router at this time

Step 2 : Open RSP By typing 192.168.2.1 on the address bar of internet explorer

Step 3 : On the left hand side click LAN Settings

Step 4 : Leave the password blank and click submit

Step 5 : Change the IP Address into 192.168.3.1

Step 6 : Click Apply changes

Step 7 : Open RSP By typing 192.168.3.1 on the address bar of internet explorer

Step 8 : On the left side click Connection type under Internet WAN

Step 9 : Leave the Password Blank And Click Submit

Step 10 : Choose the Connection type As ( Make sure you get the Connection type right , Contact your ISP About this ) Dynamic \

Step 11 : Click Apply Changes

Step 12 : Connect Modem - Router
Check the Internet Status

Mostly this will work

Maybe internet is because is not detect, check is fully connected.

check your IE internet connetion settings follow ff. steps.
1. open Internet Explorer browser
2. go to tools, internet options or options
3. under options, select "connections" tab
4. under connection tab, select "LAN settings"
5. under LAN settings check if "Automatically detect settings" is mark check if not mark it check.
6. click apply to save your settings and click ok
7. close your browser and open it again

if you still having a problem,

try this steps to chek your wireless settings
1. rigth click the wireless network status bar near desktop time & date
2. select status
3. under status, select Properties
4. under properties, select TCP/IP settings and click properties
5. check if "Obtain an IP address Automatically" is selected if not select.
6. click also obtain DNS
7. save your settings and close the properties
8. after saving, wireless will reconnect
9. open your browser for Internet

hope this will help you

Use this program
http://www.ccleaner.com/download

try re-installing internet explorer.

open internet explorer, click tools, internet options, the click connections tab, then tick the button, 'never dial a connection', click apply, close internet explorer, then open again and you may need to refresh the page a few times