If the keyboard on the laptop suddenly stopped working. The reasons for the breakdown and what to do?
A breakdown is quite common when the keyboard on a laptop stops working suddenly by itself, or after some user action with the laptop.
Let's try to figure out why and in what cases this breakdown can occur and what to do to restore normal operation of the laptop keyboard.
The first situation. Occurs most often
Conducted an independent cleaning laptop from dust — keyboard stopped working in whole or in part (some letters or numbers stopped working).
This happens especially often when the laptop keyboard is connected using an inconvenient ribbon cable on the motherboard. The situation is aggravated by the lack of experience in disassembling laptops - you can break the cable or damage the plastic connector, which can then be replaced only in a specialized workshop.
What is objectively happening in such a situation?
- Most often, during the assembly of the laptop, the keyboard is not inserted completely by inexperienced craftsmen, or the keyboard loop is fixed at an angle - crooked;
- it also happens that users try to install the keyboard by turning the cable around its own axis (upside down). In general, inattention to proper installation can be costly - it is possible to burn the controller due to incorrect polarity when connected. As a result of contacting Computer service — keyboard stopped working.
- fractures of the plume, damage to the contact group are very common.
generally favorable. It is enough to install the keyboard correctly. Pay attention when assembling a laptop or installing a new keyboard and this trouble will never touch you.
Situation number 2
Liquid spilled on the keyboard as a result of an "accident". This situation is the most dangerous of all, since it is very difficult to clean the laptop keyboard. Most often, after flooding, the laptop keyboard will have to be replaced with a new one - the optimal, albeit not the cheapest, option. It is especially dangerous if a liquid with a high concentration of sugar or salt (Coca-Cola, tea, coffee, whiskey-and-cola) gets on the laptop.
The laptop motherboard may fail, followed by the need for expensive repairs, since the liquid, as a rule, gets under the keyboard and leads either to a short circuit on the board, or to corrosion and subsequent breakdown.
In this situation, it is very important not to get confused: quickly turn the laptop upside down, disconnect the battery, turn off the device and do not turn it on until it is completely dry. Then disassemble, clean from the effects of flooding. Pay attention to checking the state of the chips on the board: under the chips there may be a liquid in the form of a sweet syrup, which will take a very long time to dry. It is better to carry out subsequent diagnostics promptly and with the participation of a specialist.
How to act correctly in this situation?
It is recommended to contact a specialized service, where they can carry out the prevention of corrosion of cmd elements of the motherboard and prevent the burnout of chips in the event of a short circuit. Including when trying to turn on for the first time.
Situation number 3
Installing some software caused the keyboard and / or touchpad to crash. Most often, drivers are such software, but there are also completely harmless programs.
This also happens, but much less often than the cases listed above. An example is the installation of USB 3.0, Bluetooth drivers. The user randomly downloaded and installed drivers for these laptop modules and got the "expected result". After installing an incompatible driver and rebooting the system, both the touchpad and keyboard may stop working.
How do I fix this problem?
You can try to boot into Safe Mode or take control of the laptop using a USB keyboard connected and remove the faulty software.
To completely remove some drivers from Windows XP or Windows 7, sometimes uninstalling a driver through a standard uninstaller is not enough. The "crooked" driver strives to be reinstalled even before the correct one is installed (typical for Windows XP).
Therefore, after running the standard removal of the driver, it is sometimes useful to use the registry editor. Find the remnants of the driver and its entries in the registry by the name and delete them.
After this procedure, you will need to reboot the laptop.
Then you need to install the correct compatible laptop driver again. If these techniques did not help, you will have to reinstall Windows again. Although this approach is radical, it is certainly the most effective.