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Black square up left

rik
rik
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What's that misterious black square upper-left placed in mozilla browser?

What's that misterious '''black square ''' upper-left placed in mozilla browser?
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Hola, Podría ser un complemento o problema con el driver de video, prueba en modo seguro: https://support.mozilla.org/es/kb/resolver-problemas-de-firefox-usando-el-modo-segur Saludos

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GerardoPcp04
GerardoPcp04
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Chosen Solution

Hola, Podría ser un complemento o problema con el driver de video, prueba en modo seguro: https://support.mozilla.org/es/kb/resolver-problemas-de-firefox-usando-el-modo-segur Saludos