It is quite simple to assemble a computer system unit, connect peripherals to it, because when designing them, it was taken into account that users can install (buy in addition, change during the upgrade process) PC components themselves. But nevertheless, a fairly large number of users make almost childish mistakes in this process.
From personal experience, I would like to highlight the following types of errors:
To upgrade a PC, users can purchase RAM, processor, memory sticks, hard drive, etc. that do not fit the existing platform. It is known that the motherboard only supports certain types of devices, but users can forget about it and, for example, buy a DDR3 bracket instead of DDR2 RAM. With the naked eye, you can see that these bars are even geometrically different, but the most stubborn users can force a new bar into the slot, which will cause irreversible PC malfunction.
if you want to buy additional RAM, buy a more powerful processor or video card, or a larger hard drive, be sure to check the motherboard model before buying. This can be done in the documents for the PC or a special program.
The connectors for connecting a monitor, printer, scanner, keyboard and mouse, and other devices are asymmetrical so that the user can only connect the device correctly, but there are cases when the owner of the PC forcibly pushes the plug into the connector with the other side or even chooses the socket, which, in In principle, not intended for this plug.
remember that any cable must not be forced into the connector!
Having read useful articles about cleaning dust, changing thermal paste, the need for other computer maintenance, some users get down to business too zealously. This is probably why system administrators are faced with broken keys, system files deleted by the user (without which the OS does not start) and other problems that the user has created for himself.
if you do not know the basics of electrical engineering, or at least do not understand the laws set out in the school physics textbook in the "Electricity" section, as well as the text in the computer science textbook, if at laboratory work in physics you were asked to just sit and see how your comrades work, you should not follow advice found on the Internet (especially since, unfortunately, today some articles are written by writers inexperienced in system administration who are trying to retell information found on the Internet on this topic).
