Don't rely on it being preserved. Many repairs require Apple to replace or reformat the hard disk, which will result in the loss of your data. Please make sure you back up your data on a regular basis to minimize your data loss. Apple and its AASPs are not responsible for any damage to or loss of any applications, data, or other information stored on your MacBook Air while performing service.

Apple is the king of consumer laptop tech support, and the company added to its repertoire in the past year. In addition to answering questions via social media, live online chats, its support app and phone calls, the company began posting tutorials to a YouTube channel in November 2017. These options flank the company's existing Genius Bar, which still stands out as one of the few ways users can get in-person support directly from a laptop-maker.
Systems developers are finding the Apple technologies to be a powerful option for providing network solutions. From a single user, one operating system personal computer, OS X has expanded to serve just about every type of network content available and host multiple operating systems. Powerful system command and scripting languages like Perl and AppleScript allow administrators and users to provide system level solutions in a fraction of the time it would require to develop application level solutions.
To the Apple rep here. Worked in IT and hated my monthly rotation when I tested as a cust. supp. level 2 rep. It is stressful and I agree - be prepared to wait or have Apple call back. When I was looking for a job, I considered cust. supp. for a brief time and warned my spouse I'd be stressed out if I took the job, so again, I understand. But I'm a user and this is different.
These bogus Tech Support alerts are shown in such a way as to trick the user into thinking their computer has crashed or that a virus has been detected on the computer. It does this to try and scare the infected user into calling one of the listed numbers in order to receive support. In reality, though, they will only be greeted with people who are trying to sell them unneeded support contracts and services.

While utilizing your MacBook Air, you will regularly see that the applications are solidified. This issue by and large emerges because of constant use of an application. To determine this issue, you can restart the application that you are working with. In the event that the application is totally inert, discover the application on your Dock and right tap on the symbol to raise the power quit alternative. Presently restart the gadget and check whether the issue is settled or not. On the off chance that the application still stops, check for updates. Introduce the updates effectively to dispose of this blunder. Another choice to determine this issue is to shutdown the gadget totally.

Called them and left a message on a Thursday about a month ago.  I also emailed the same day using their website form, indicating the specific issues I was having (model, OS, RAM, etc.).  The next day I got a return call from their admin saying only that someone would come to my house and it would cost $140 ($150?) for an hour.  Told her I had emailed with the specifics, and I asked to speak with a technical person for a few minutes first, to get their view on my issues, whether they could solve it, and if so, how long it might take.  She assured me I would be contacted.  I received no reply to my email and no call.
Jul 27 8.0 - Common Technical Issues Hey folks! With the prepatch arriving on the 17th, we wanted to provide some resources for you to help with common patch time technical issues. You may run into a few things which may prevent you from getting in game and enjoying the new content. This patch also includes a large increase to our system requirements, as we implemented several game engine changes to take better advantage of newer technologies. Before getting into specific issues, please ensure that: 1. Your computer meets the new System Requirements 2. Your drivers and operating system are fully up to date. 3. The game has completely finished updating to the most recent patch. In the links below, we cover the most common causes of technical issues around patch time. 1. Unable to Install or Patch World of Warcraft 2. Incompatible/Red Realms after Logging Into the Game 3. World of Warcraft Lockups and Crash Errors 4. Unable to interact with quest objects or NPCs. 5. World of Warcraft Performance IssuesDrakuloth1 Jul 27
Some users have complained of CPU lockup caused by overheating. Apple released a software update in early March 2008 to fix the problem with mixed results: the deactivation of one CPU core was corrected; however, the runaway kernel problem remained for some users.[22] The problem is aggravated by system-intensive tasks such as video playback or video chatting.[23]
Starting over again, multiple times, I kept getting the same result, until (without any real indicator of why) everything worked properly. The words "phone number" finally appeared above that field, and the form also automatically formatted my number in the (123) 456-7890 style and allowed me to receive the calls. This error came up during my first two calls, but not my third.