How to get a normal window screen
when i click on to Mozilla Firefox the screen goes black for about 10 seconds, and then when it does come on everything on the screen is enlarged. When i sign off, the screen goes black again to go back to the opening window, with everything there in normal proportions. How do i correct it?
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Please describe the problem better.
Are you starting Firefox, or having the problem on a web site?
Firefox You may have a corrupt xulstore.json file. https://support.mozilla.org/en-US/kb/changes-toolbars-and-window-sizes-are-not-saved
Web Site Many site issues can be caused by corrupt cookies or cache.
- Clear the Cache and
- Remove Cookies
Warning ! ! This will log you out of sites you're logged in to.
Type about:preferences<Enter> in the address bar.
- Cookies; Select Privacy. Under History, select Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.
- Cache; Select Advanced > Network. Across from Cached Web Content, Press Clear Now.
If there is still a problem, Start Firefox in Safe Mode {web link} While you are in safe mode;
Type about:preferences#advanced<Enter> in the address bar.
Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.
Poke around safe web sites. Are there any problems?
Then restart.