My name is Rohit and I work for the Social Media and Community Team at Dell.
Regarding the issue you are facing I want to confirm from how long you are facing this issue and have you done any updates for browser. You can try opening your yahoo page on any other browser or you can also
try doing internet explorer defaults. Please update me if that works.
Looking forward for your replay.
Glad to assist you!
Thanks and regards
Dell Social Media Responder