Your manager put you in a weird spot and you don't seem to see it. She picked a closet on purpose so nobody would hear her secret, then dumped it on the one person below her who couldn't really say no. Now you're mapping out how to cover her clients, which is unpaid work for a job you don't have yet, and if she does leave, guess who gets blamed when things fall apart. If she stays, you're now the person who knows she was ready to walk, and that makes every future check-in awkward for you, not her. A good boss keeps that stuff to herself until she has a plan and tells HR, not the guy squeezing past printer paper.

Six times is a lot of reseating for a machine that supposedly just had a loose stick. I work on Latitudes all day and those slots do get flaky, but when a board only posts on one specific working combo you are usually looking at a cold solder joint or a failing slot. Here is the thing most people miss. That machine will probably come back in six weeks doing the exact same thing, and now you have already told the customer it was fixed once. I always reseat, test, and run it hard for a day before it leaves. If it passes I send it out but I do tell them upfront that if it happens again the board is the likely suspect. That way my hands are clean and they are not blindsided.