What does it mean when the computer shows that the signal line is not connected?

The computer display signal cable is not connected because the memory module or monitor data cable is in poor contact, or the memory, graphics card, monitor, or data cable is damaged. The solution: 1. Turn off the power, open the case, and re-insert and unplug the memory module; 2. Replace the memory module; 3. Replace the new data cable or graphics card; 4. Perform professional maintenance.

The operating environment of this article: Windows 7 system, DELL G3 computer

What does it mean when the computer shows that the signal line is not connected?

The problem is that the memory module or monitor data cable is in poor contact, or the memory, graphics card, monitor, or data cable is damaged.

Handling suggestions:

1. If the monitor is powered on but shows no signal, shut it down (if short pressing the power switch is ineffective, press and hold the switch until the power indicator light goes out or unplug the power cord directly) Turn off the power and open the case, re-insert and unplug the memory module, and wipe the gold finger with an eraser in one direction (scraping the back of your thumb and fingernail will also work), install it and then turn it on again (before operation, touch the wall with both hands to release your own static electricity) Or wear anti-static gloves). If you don’t know how to operate it, then it’s simple: just slap or kick the chassis (note the position: the center of the left and right side of the chassis without the interface on the back; note: don’t use too much force). The above may need to be repeated. If it is ineffective, the memory module needs to be replaced. If there are more than two memory sticks, you need to test them one by one.

2. If the above operation is ineffective, shut down the computer, open the case, re-insert and unplug the graphics card, and tighten the data cable between the monitor and the graphics card. If it still doesn't work, consider that the data cable or graphics card is damaged, then replace it with a new one.

3. If the host can display when connected to other monitors or the local monitor still cannot display when connected to other normal hosts, it means that the monitor is damaged and needs professional repair.

For more related knowledge, please visit the FAQ column!

The above is the detailed content of What does it mean when the computer shows that the signal line is not connected?. For more information, please follow other related articles on the PHP Chinese website!