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How can I remove a Userid stored on a MAC?

I use an IMAC and accidentally typed my password in the user name box. Now when I click on the username box, my password is displayed. I can't delete or clear its contents. I tried to add many other possible 'userID' on the page and now they're all s
How can I reduce the size of the security time machine file

Saving file of my macbook air is to get half of the capacity of the hard drive on my time capsule. I would rather not do it again, but I need to go back five years. I would be sufficient to return two or three years. But how to delete a few years to
Display has stopped working on Satellite A300

Hi guys,. I have satellite a300 PSAg4a - 02500 m laptop. All of a sudden the display has stopped working on the laptop. I tried to plug in an external display, but it does not work also. I can't even see the bios screen not. Laptops normally, I hear
Pavilion 15 p-020tx: Maximum RAM to Hp Pavilion P 15-020tx

I have Hp pavilion 15 p-020tx with 4 GB of RAM. It has an empty slot. I want to know how I can add the extra RAM. What is the MAXIMUM of RAM limit for my model.
How to perform a clean boot on Dell Inspiron 531 32 bit

Impossible to get into Windows, menu missing also start