w540 fingerprint reader wont start during windows logon

[betrayer]

Greetings to all fellow thinkpad owners,

As the title indicates, i have an issue with my w540's fingerprint function.

My laptop is relatively new ~2 weeks old and as i am on vacation i boot it every 2-3 days just to mess with it.

few days ago i noticed that the fingerprint wont always start in the first boot and wont work in windows log on, however it will work if i lock/sleep the laptop.
some times it would work some other times it wouldnt. now i tried re-installing the driver and now FP doesnt appear at all in the logon.
i also noticed that the fingerprint software made the laptop a bit slower during the windows startup. now that i have removed it the password area appears almost immediately during the logon process.

things i have tried so far:
1) all drivers are up to date
2) removed all registered fingerprints, deleted the driver and the FP manager pro
3) installed the FPmanager pro from the lenovo update system and registered new fingerprints
4) i only have 1 admin account on windows and the all options are ticked in the FPmanager pro also in biometric settings its ticked to allow users to use FP to log on.
5) waited for 2-3 minutes in the password area, only the FP led open, but it wouldnt work

the issues persists. FP wont appear on logon but only after sleep/lock.

my software specifications:
win7 x64 pro
antivir
latests windows updates
lenovo software not installed: password manager, quick control

and nothing crazy installed apart from steam for games and windows office.

is this a hardware problem or something that windows 7 are causing?

thank you for your time and thank you in advance for any reply

kind regards,

[indicium]

Are you using UEFI with Win 7?

[betrayer]

Hello and thank you for your reply,

UEFI/Legacy boot is set to Both
UEFI/Legacy boot priority is set to Legacy first

[indicium]

Try setting your BIOS to Legacy Only, there is a problem with W7 and UEFI that doesn't allow the fingerprint reader to work properly. I'm running W7 Ent with EFI and never activated the fingerprint reader because of this. It works fine in W8 with EFI.