der Computer
computer
An electronic device that can process, store, and output data using programs.
Mein Computer ist abgestürzt und ich kann nicht weiterarbeiten.
My computer crashed and I can't continue working.

computer
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computer
An electronic device that can process, store, and output data using programs.
Mein Computer ist abgestürzt und ich kann nicht weiterarbeiten.
My computer crashed and I can't continue working.

'Computer' (computer) is a very productive word and forms many compound nouns in German. The word 'Computer-' is simply placed before another noun, e.g. 'Computerspiel' (computer game), 'Computervirus' (computer virus), 'Computerkurs' (computer course), or 'Computertastatur' (computer keyboard).
Ich muss einen neuen Computertisch kaufen, meiner ist zu klein.
I need to buy a new computer desk; mine is too small.
In everyday life, certain verbs are used very frequently with 'Computer' (computer). These include: 'den Computer hochfahren' (to boot/start up the computer), 'herunterfahren' (to shut down), 'neu starten' (to restart), and when it no longer works, people say 'der Computer ist abgestürzt' (the computer has crashed).
Du solltest deinen Computer regelmäßig neu starten.
You should restart your computer regularly.
Pay attention to the prepositions. You work or sit 'am Computer' (at the computer). Data or programs are saved or found 'auf dem Computer' (on the computer).
Ich sitze den ganzen Tag am Computer.
I sit at the computer all day.
server
'der Computer' and 'der Server' can both be electronic devices that process data. 'Computer' is the general word for such a device, for example at home, in the office, or at school. 'Server' is used when a computer in a network gives data or services to other devices. Learners may confuse the words because a server is often also a computer. The important difference is: not every computer is a server. 'Server' only fits when the network function is important.

Der Computer im Kurs ist heute sehr langsam.
The computer in the course is very slow today.
Der Server speichert die Dateien für alle Mitarbeiter im Büro.
The server stores the files for all employees in the office.