When I start up my computer and log in for a split second a window pops up and closes so fast that I can only see a white square quickly flash. Is there a way to find out what this is for?
It can be anything.
Some programs load themselves and hide the window ASAP (as soon as possible).
That can be ignored.
You can check the startup list by running msconfig.exe in "Run..." start menu command. Go to tab named Startup and you will see what is loading at startup, but don't make any changes.
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