hello, please start firefox in safemode by pressing the shift-key while it is launching (you'll have to close all open firefox windows before you attempt this) & go to firefox > options > advanced > general & disable hardware acceleration.

A more detailed description of what is wrong would be helpful.

There is a link to a screenshot in the system details list that shows the display problem and is most likely a hardware acceleration issue.

thanks,

I will look into it.

But, I have already reinstall firefox many times already..

thanks,

I will try this out.

I think firefox on my computer doesn't like imgs.

everytime, I see massive imgs, firefox displays those weird picss.

Did you try to disable hardware acceleration in Firefox?

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.