Basically no boot device could be 1 of three things listed below.
1. You have connected an incorrect external device and the system responds to boot from this however no operating system is available. Hence the error. What to do : You have disconnect, reset and select the correct bootable device.
2. You have a faulty hardware specifically your bootable harddisk, corrupted or malfunctioning. You have to reformat and correct the bios installed on the disk.
3. You have not selected correct bootable device. - Select the correct harddisk, if you have partition, be sure to select the one with the Operating system is installed to.
Answer: This can allow for less hackers to acquire your most essential and private information. It will be kept private to you and only others you share with.
Explanation: For example, if I wanted to edit a document without being given the consent to do so this will breach the security of user permissions, but if the individual was to set the document to view only, I would not have access to edit or even change little aspects of it.
Answer:
you can talk to him
show him what you want
tell him you will do work around your house to pay for it
Explanation:
that is what I would do
I hope this helps you get it