Why Does Black Screen With Lines Appear On Firefox?

[woodbine]

Bit of a strange one. I'm using my FF browser normally when suddenly
the screen turns black with short white lines dotted about.
Nothing I try can get it to work, but eventually it will start working by itself.
I can use all other functions of my desktop when this happens,
and I opened Windows Edge and it's working normally. Any ideas from the experts
what the likely cause is.

Bit of background - recently I had lots of problem with BSOD and other symptoms
and a friend diagnosed that the graphics card on the computer's mother board had
stopped working. He installed another separate graphics card in the slot for it.
Note - the graphics card wasn't new and is a basic Geforce 210. I don't do gaming,
so the performance is adequate for me. Wonder if there is poss any link between
this problem and my current fault?

Any help and advice appreciated.


> https://i.imgur.com/rWcWPZf.jpg

[therube]

You can disable hardware acceleration in FF itself (to test to see if possibly HA is the cause).
about:preferences -> General --> Performance ---> (uncheck) Use hardware acceleration when available

[woodbine]

You can disable hardware acceleration in FF itself (to test to see if possibly HA is the cause).
about:preferences -> General --> Performance ---> (uncheck) Use hardware acceleration when available

Thanks for your reply and advice.

I closed FF as it was stuck on the black screen with white lines. Opened FF again straight away and it opened normally
and worked correctly. I disabled hardware acceleration as you suggested in the settings - so fingers crossed. Thanks again, will
see how I get on and if it sorts the problem.