If IE crashes, the most likely problem is that there's a buggy add-on (Toolbar or Browser Helper Object). In order to verify and isolate the buggy add-on, follow these steps:
- Start IE in No Add-ons mode, either by right-clicking the Desktop icon, or clicking START | RUN and typing:
iexplore.exe -extoff - Determine if IE fails.
- If not, use Tools | Manage Add-ons to disable all browser extensions and toolbars.
- Restart IE and reenable browser extensions one-by-one.
- Once you've found a broken extension, contact the manufacturer and ask for an update.
(Reference: http://support.microsoft.com/?id=928426)
If IE still crashes on startup, and you've got Google Desktop installed, please ensure that you update to the latest version of Google Desktop.