A combination of different security programs used together might cause internet explorer to stop working.
Due to a bug in Internet Explorer 11, Internet explorer 11 stopped working when creating multiple payments, when one of the payments had a structured communication. This issue only occurs when you are using Internet Explorer 11 or Windows 8.1.
Then turn off hardware acceleration:
Hardware acceleration uses your PC's GPU to speed up graphics-heavy tasks like video streaming or online gaming. Turning this off might help solve display problems.
If the issue still persists, your Isabel card reader may be broken. Please try with another Isabel card reader and order a new one if needed.