How can I remove the black background that appears on my Mozilla browser affecting the sites I open? Is it an adware/or malware? It also slows down.
Accepted AnswerPCrisk SupportTomas MeskauskasOffline0Hi Anna, try resetting your Mozilla Firefox settings and check if it eliminates this problem. If this doesn't eliminate the black background issues, you could try doing this - click the orange Firefox button (or Tools menu) > Options > Content > "Colors" button. Check which is your default color for websites.
To check if your computer is infected with malware/adware try scanning your computer with Malwarebytes Antimalware.