The YouTube videos are not that helpful:
The first video (2 seconds) goes by too fast and ends being stuck in some "Auto play" cycle that presents any number of unrelated postings.
The second video (19 seconds) is difficult to follow - does not freeze to get a good look at the indicated component. Plus seeing a metal screwdriver "pointer" makes me wonder all the more....
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Update your post to include full system hardware specs and OS information.
Include PSU: make, model, wattage, age, condition (original to build, new, refurbished, used)?
Disk drive(s): make, model, capacity, how full?
List of all connected peripherals.
Wired or wireless network?
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How was/were the components "lost"? What was being done or attempted when that happened?
Delete the YouTube videos and take photographs of the missing component(s).
Ensure that the photographs are well lit, focused, and clearly indicate the problem.
Post the photograph here via imgur (
www.imgur.com) > green "New post" icon.