IE is part of Windows and can be "uninstalled" by going into Programs and Fearures/Turn Windows features off or on and uncheck its box, but it's best to install another browser before doing this as you will lose all access to the Internet.
Reset IE to defaults first also before you uncheck its box, reboot then go back into features and recheck its box.
You haven't said which version of Windows you are using but for Win 7 go Start - All Programs - Accessories - System Tools - Internet Explorer (No Add-ons) and IE should open to tell you are using it without add-ons.
Click on the home page icon to see if it remains stable then.
If IE is still unstable then boot the other browser you have installed and download/run
http://support.microsoft.com/mats/ie_performance_and_safetyIf IE works okay without add-ons then you will need to uncheck all of them and recheck one at a time until the problem reoccurs.