The answer is actually false. Embedding only part of a font is called Subsetting.
Traditional methods of business communication tend to mean paper-based messages such as formal letters, brochures, reports, proposals, and notes.
There is no denying the fact that digital communication has a lot more advantages as compared to the traditional methods of business communication, but there are certain cases and situations where traditional methods and preferred over digital communication.
Paper-based messages provide objective evidence that a formal undertaking has been issued. The advantage of paper-based messages is that they can't be tampered with and not reproduced. They represent the signature of the concerned authority and are always treated above the digital signatures.
If your computer is old it may be the screen is dying or if its brand new it would probably be the power supply check your battery or cables