Many users in the installation of win8.1 system, the default selection of the UEFI boot mode, after the system installation is completed, into the system desktop will appear in the lower right corner of a secure boot incorrectly configured watermark, for this problem is due to the user opened the UEFI mode, and did not open secure Boot settings caused by the following small series for you to provide a detailed solution!
Solving method
1, into the BIOS, find secure boot mode return to custom then the following options can be selected.
2, Return key msnagement, find install all factory default keys return, select Yes and return, the following all turn to the right to installed on the line.
3, back to the previous level of interface, will secure boot mode back to standard save quit, restart the computer, start desktop watermark removal completed.
Modified by the above method, reboot the computer is not a watermark on the desktop, the cause of this problem is due to the start of the UEFI mode, and by not open secure boot, so we just need to set the secure boot to open the state can!