On my Win 7 laptop I have problems with the fingerprint option. I had registered several fingers but when I need to log into Windows 7 no fingerprint logo appears (even though the light of the fingerreader lights up). I have to press Control Alt Del and only then I'm able to use the fingerprint option.
All the drivers are current and up to date.
This could be a Settings issue, where you may have programmed your system to prompt for fingerprint access only after pressing on Ctrl+Alt+Del. Ensure that this is disabled.
To change this, proceed with the following:
Start Menu > Control Panel> System and Security> Administrative Tools > Local Security Policy.
Look for Security Option and double click on it to bring up a list of options.
Scroll down to Interactive Logon, and Select Disabled.