How is it with Firefox (FF) click here? This is as a temporary solution only for now.
Once FF is installed & running OK, install the IE Tab add-on from click here. Then see if you can open an IE tab within FF to visit sites, Windows Update, etc. Right-clicking on the FF taskbar > Customize will allow you to place an IE Tab icon on the upper toolbar for easy access.
Do a fresh install/recovery only as a last resort, & don't forget to do a thorough backup prior to this. G