Hello to all,
I've just had something happen that's happened maybe 2-3 times over the past 8 months or so: two vertical white bars suddenly flashed for just a fraction of an instance in the middle of my screen while I was typing an email in Thunderbird (each one about 1.5cm wide and about 2cm apart).
Is there any sort of diagnostic tests I can run to see if there is a problem?
Any suggestions on what my best course of action is to make sure than nothing is wrong?
Thanks
I've just had something happen that's happened maybe 2-3 times over the past 8 months or so: two vertical white bars suddenly flashed for just a fraction of an instance in the middle of my screen while I was typing an email in Thunderbird (each one about 1.5cm wide and about 2cm apart).
Is there any sort of diagnostic tests I can run to see if there is a problem?
Any suggestions on what my best course of action is to make sure than nothing is wrong?
Thanks