After cleaning the computer, the monitor does not turn on

A personal computer, like any other device, requires regular care and cleaning. This includes wiping the monitor with special wipes, disassembling the keyboard, and, of course, cleaning the system unit from dust. Just about the last action will be discussed in this article, since inept and inaccurate handling of the inside of a computer can carry unpleasant consequences.

Cleaning your computer from dust

First you need to completely turn off the computer. After it goes out and finishes its work, you must disconnect the network that powers it and turn your attention to system unit - on the back there is a small on / off button, it must be turned off position. Now you should carefully disconnect all the wires from the sockets (the cable from the monitor is usually screwed bolts located on the plug) and move the unit to a place with plenty of free space.

To gain access to the interiors of the system unit, you must first unscrew one of its side walls. Inside is a board with modules and fans installed on it. Directly cleaning dust is best done with a large brush and vacuum cleaner at low power.

ATTENTION: When cleaning the system unit, in no case should the working vacuum cleaner be brought too close to the microcircuits - this may cause mechanical damage to the board or one of the parts. The dust is whipped up with a brush or strong blow, and already from the air it is sucked out by a vacuum cleaner.

For more thorough cleaning, you can unscrew / unhook some elements from the board (but only if the user is sure that he can put them back) and blow them from all sides.

After complete cleaning of all parts of the system unit from dust, it must be assembled and put in place, repeating all the steps in in the reverse order - screw on the cover, put it in place, connect the wires, put the button in the “on” position, start computer.

If after this procedure there are any problems with the system, it means that an error was made in the assembly of the components of the system unit.

Checking the computer monitor cable

If the monitor does not turn on when the computer starts up, but operation sounds are present, the monitor cable may have become unusable. It is he who serves as an intermediary between the video card located on the motherboard and the monitor itself. Such cables are divided into three varieties:

1. VGA is the oldest and simplest type, fastened with a trapezoidal protrusion and a pair of bolts. Typically, the forks are blue.
2. DVI is a newer type, but very similar to the previous one. The transition from one to another is carried out using an adapter.
3. HDMI - cable for modern monitors. He has a smaller plug and no bolts.

Most modern monitors provide the ability to connect all types of cables, that is, the choice of connection type is important only for quality. To check the cable’s performance, you can try to connect the system unit to the TV - if it shows, then the problem is in the monitor itself, if not, the cable is to blame.

IMPORTANT! Sometimes the cause of the problem is a loose cable insert into the socket of the system unit or monitor.

If the system unit at the start does not show signs of life, then perhaps its own power cable, which is connected to the network, is to blame. It should be checked on another computer, if possible.

BIOS reset

BIOS is a unique tool for managing the operation of a number of functions on a computer. In some situations, its incorrect settings may cause the image to not display on the screen. To restore this feature, you will need to reset the BIOS.

To do this, you will again need to disassemble the system unit (using the instructions above) and find there a tablet battery located on the motherboard - the circuitry on which most of the slots for wires. Next to this battery is the inscription CLR_BIOS and a small jumper located in position 2-3. The jumper must be removed and put on the adjacent contact so that it is in position 1-2. After ten seconds, return everything to its place - the BIOS is restarted.

Burned out video card

This option should be considered after all the others, since video cards burn out infrequently, and they do it unnoticed even less often. To test a discrete video card (one that can be replaced without replacing the motherboard), it is enough to disconnect it and put another, working one. A discrete graphics card is removed from the socket on the motherboard. You can find out that this chip is just a video card by the sockets that include the cable from the monitor.

If the video card is built-in, then you have to borrow a discrete video card somewhere and install it in your motherboard for verification. Installing a discrete graphics card does not require supernatural efforts, you just need to install it in the intended slot on the motherboard. To do this, you need to find a slot suitable for the video card's contacts (95% use the same fasteners), bend the locking plug, and insert until it clicks, while the plug will lock itself. The computer itself will determine the desired graphics card.

Problem with drivers and operating system

If, after checking with working parts, the screen still does not want to turn on, then you need to contact the drivers. Incorrectly installed drivers can slow down the system, or even prevent the computer from working. If after startup nothing appears at all, it is better to take the computer to a service center.

If after launching there are inscriptions on the black screen, but then nothing happens, then you can try reinstalling the drivers. To do this, immediately after starting, you need to press F8 until options appear. You need to select "Safe Mode" or "Download the last successful configuration."

After starting the PC, go to "Start" - "All Programs" - "Standard" - "Utilities" - "System Restore". In the window that opens, click "Select point ...". A menu will open where you should select a date at least a day ahead of the moment when the wrong drivers were installed (when the computer was working normally). It will not affect photos, videos, computer games, etc., it will only affect the drivers and system components. After the selection, you will only have to wait until the system is restored.

ATTENTION: if none of the solutions presented here helped, or you just don’t have the urge to poke around on your own computer, there is a fear of breaking something - the device must be taken to a service Centre. Knowledgeable people work there to help solve the problem and pinpoint the breakdown.