Hi Duvall,
From what I understand, the changes you made were on Windows... is this correct? If so, have you tried to check in the BIOS settings if you can enable/disable FingerPrint reader?
About the freezing, I suggest you do the steps here:
Is your PC running slow...?
Also check HDD and RAM for hardware related errors. Use Memtest86+ for RAM and use your HDD maker's diagnostic tool to test the HDD.