Maintaining computers 🛠️ | Applying Computers

Even a perfectly assembled system over time accumulates dust, gets clogged with software “junk,” and wears out.

10.1. Physical (hardware) maintenance

Aimed at supporting the condition of the components themselves.

Fighting dust — dust works like a warm blanket. If heatsinks are clogged, the processor overheats and deliberately slows down (throttling). Regular careful cleaning returns speed.
Thermal paste replacement — between the processor and the heatsink a special paste helps transfer heat. Over the years it dries out, so it periodically (once every few years) needs to be renewed.
Modernization (upgrade) — often it is enough to add RAM or replace an HDD with an SSD for the device to work noticeably faster.

Updates — regular installation of OS and program updates. This is like vaccination: developers close security holes and improve performance.
Digital cleaning — deleting temporary files, old downloads, and unused programs. This frees disk space and improves stability.

Any physical part will eventually break, or the device may be stolen. Specialists use the golden backup rule “3-2-1”:

make 3 copies of important data;
store them on 2 different media (for example, the computer + an external disk/flash drive);
keep 1 copy outside the home (for example, in reliable cloud storage) in case of physical damage.

When repair or upgrade costs more than a new device, the computer is taken out of service.

Data destruction — simply moving files to the “Recycle Bin” is not enough. Before selling or giving away a computer, the disk must be completely and irreversibly wiped (or the smartphone reset to factory settings).
Recycling (disposal) — electronics and batteries must not be thrown in ordinary trash because they contain harmful substances. Take them to electronic waste (E-waste) collection points, where useful materials are safely extracted.