ThinkPad T520, 8GB RAM, Windows 7 64 Professional. Downloaded IE10-Windows6.1-x64-en-us.exe from MS. Smooth install but after the reboot, clicking on the IE icon results in the browser opening, but without menus or favorites bar, about 5 seconds of disk activity and then closing back to the desktop. Ran System File Checker, ran the MS IE 10 Preparedness Tool. No luck. Uninstalled IE 10. Now I have a perfectly functioning IE 9 64 bit but IE 9 32 bit is hosed. Chrome works fine. Any ideas would be greatly appreciated.