According to your description:

1. Because you didn't provide the detailed model of the machine, you can't know your machine information.

It is recommended that you use a genuine system. If your machine still has a genuine system, I suggest you start the machine, press F4 to enter the restore interface, and then select Restore or Complete Restore. (Under normal circumstances, only the data of disk C is recovered. In order to avoid losing important data, it is recommended that you back up your files. )

2. I suggest you check whether the online banking plug-in supports the system you are using, or whether the IE version meets the requirements.

3. Kill viruses, etc. , and eliminate the machine system failure. Uninstall the plug-in and try to reinstall it.

Welcome to Samsung Care Center:

/app-cares