Windows 10: Power Indicatr Light Keeps Blinking In AC Power.

why does it keep blinking and doesn't know that it is connected to ac power?


***Changed Original Title From: power indicator light***

:)

 

Power Light blinks before Shutting Down

I thought the same thing. My PC does that.. red light blinks until it's fully shut down.

 

Blinking Yellow Start/ Power On Button


I assume this is the Dell Dimension E521 you show in your "My Computer".
The blinking power button and that you have to unplug the power to get it working suggests a power supply problem. Could be the motherboard or some component causing it but most likely the power supply.

Power supplies have an internal "electronic" circuit breaker, called a "crowbar" circuit and if the power supply "crowbars" you have to remove AC input power for a short period to get it to reset. Considering the age of the E521 (I used to have an E510) I would first suspect the power supply. The power supply is a standard ATX style power supply, not a Dell proprietary so finding one should not be problem. I would say at least a 400 watt and a "modular" would be best as it eliminates having to stuff all the unused power cables in the case.

UPDATE: I did some checking on the Dell forum and every instance of a flashing power light turned out to be power supply.

 

laptop's ac power keeps turning off


Hi,

My laptop's battery is no good so I always use the laptop on ac power. It was working fine last night but today it keeps shutting down after a minute or so. I've just noticed the battery icon will start off showing the power plug next to it but then the plug disappears... if I disconnect the power lead and reinsert it, I will get the plug showing again but only momentarily.

Wondering what my first steps should be... is it possible it's a setting or software problem rather than the power unit/cord itself?

(am using trusty old--if loud--laptop at the moment)


thanks in advance.