hello hardytandean, other users with this problem all had an embedded intel hd3000 graphics cars with an old driver present. in case this also applies to you, here would be a link to update the driver, which in turn should also address the black firefox problem: https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23764 (for win7 64 bit)

in case this doesn't solve the issue or does not apply to your system, start firefox into safemode by pressing the shift key while the application is launching & disable hardware acceleration in the firefox menu ≡ > options > advanced > general (that setting will take a restart of the browser to take effect).

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

hello bro philip.. thanks for ur helping me.. now i can use the new version of mozilla but have something problem again after i upgrde my hd3000 graphis my screen revolution be 800x600 so how to change it to normally ?? i already change it but cant

hi, did you restart your computer once after performing the update? what happens when you try to change the resolution manually? http://windows.microsoft.com/en-us/windows7/change-your-screen-resolution