Why is my Firefox not displaying the upper right function buttons of 'minimize', 'maximize' and 'close'?

Perhaps you accidentally pressed the F11 key.

Press it once to see if you get those buttons back.

Thanks, @Brian1946 , but no.
That only made it worse, as the black rectangle that should contain the buttons was gone, too.
Good call, though.

Are you using a theme?

It’s not able to find the assets for the buttons for some reason.

I’d try reinstalling first. Or I guess more specifically, uninstall, run MalwareBytes and at least one other similar software (maybe AdwCleaner) and the reinstall firefox fresh.

I would suggest to reinstall it.

My first instinct is covered my @johnpowell. It sounds like a rogue theme to me too.

Will I loose crap (bookmarks and stuff) if I reinstall?

I added a theme, and the buttons are still a black box.

My computer is also popping up a box “Do you want to allow Firefox to make changes to your computer?” every time I open firefox after a restart.

My computer is also randomly shutting itself off, and restarting.

As near as I can tell, all this crap started with the virus, but it’s gone according to Malware.

I’m inclined to agree with @funkdaddy about uninstalling then running Malwarebytes before reinstalling. Only I would strongly recommend running a robust antivirus scan (such as AVG) before installing Firefox 36.0, the just released latest version.

@sahID AVG. That doesn’t even belong in the same sentence as “robust”. Avira or Avast are highly-rated anti-virus while AVG is somewhere between “mediocre” and “also-ran”.

@ibstubro It sounds like you’ve been jacked. The bookmarks are in a profiles folder and there is a way to manually back them up, so don’t worry too much about that. I would worry more about disinfecting your system.

@Ali01 Avoid freeware? If this question wasn’t in general, I would tell you at length why that is wrong. Suffice it to say that I know of certain freeware that is used by professionals for it’s performance, and other freeware that is used by governments as it provides security unmatched by commercial competitors.

I had a Trojan, Binkiland. I thinf it’s gone.
Function button in upper right still black box.
When the PC goes into power saving mode, it will not wake up…must power it down.

Looks like I’m headed for a crash.

The not waking up from sleep…. I’ve encountered that before with WinXP and it was just bit rot and not any malware infection. Eventually it leads to increasing annoyance until it reaches full FMH levels, and there really isn’t much that can be done about that short of backing up your data, nuking the drive, and starting again.