Ideacentre B5 Series computer power on indicator light on but no display no alarm sound

Failure phenomena:

Ideacentre B5 Series When the computer starts or restarts, the power indicator light is on but no display or alarm sound.

Solution:

1. Please check if the backlight switch on the screen is turned on

First look at the screen backlight is turned on, the backlight switch is turned off in the case of the screen backlight light on, this time you need to press the backlight switch button, when the backlight led off when the observation can be displayed.

2. Check if the signal source is a PC signal (for b52x,b54x models)

Please press the signal Source toggle button in the lower right corner of the screen, try to press more than a few times and see if the PC appears on the screen to see if it can be displayed properly.

3. Release static electricity, check whether the cause of static electricity.

If the electrical environment in the home does not have a grounding wire, the computer after a long period of static accumulation too much will cause the computer can not boot normally, you can try to do this:

The main power cord unplugged, if you connect to other devices also temporarily unplug, and then press the host button 5-10 times (press and release, interval of 1 seconds), and then reconnect the power cord, press the boot button to see if the normal boot, if you can boot, then we recommend you contact the property or electrician, the ground connection is good To prevent this problem from appearing again later.