Windows 10: blinking power button and slow start up

So when ever im done using my laptop and i close the lid and then whenever i open back up the screen is black and all i see that the power button is blinking and then i hold the power button it powers back on like normal, but the start up is very slow than before. if there is any fix to this please let me know thank you.

:)

 

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.

 

Blinking Yellow Start/ Power On Button

When I shut down my pc at the end of the day it goes off completely and all lights disappear. However, when I start my computer the next day and press the power on button, it turns a blinking yellow and doesn't turn on. I have to turn off the power strip and wait 10 seconds before I attempt to restart. Then it starts as it normally would. I have to do this every day. Does anyone know how to fix this annoying problem?

Thank you.

 

Press the Start button, blue power light blinks once, accessory lights blink once then nothing

I have a HP Elitebook 8740W running Win 10 Pro. When I press the start button the power light on the front of the laptop comes on for 2 seconds, then the accessory lights across the top of the keyboard blinks once, then nothing happens. The screen is blank.
If I hold the Start button down, the power light stays on for about 9 seconds then the accessory lights blink and then the screen is blank.

I have removed the battery and power wire, then held down the Start button for 30 seconds. Put the battery back in and the power plug. No change is anything.

The power light does not come on when the laptop is plugged in.

Any ideas on what to do now.