Answer:
Adding new hardware/Software
Explanation:
Depending on how much you add to your computer it could make it have too much, so it can work slower and make it malfunction therefore i would Troubleshoot for that reason.
MS-DOS is a command-line operating system.
Therefore, the best answer is Command-line.
FORM factor. Example are ATX, micro ATX, and many more. ATX and MATX are the most common next to servers as well
