My Compaq presario must be connected to the network for a long time before it can start.

It flashes green light and tyhen back when its ready flashing will stop. What is a power unit failure?

Disconnect your PC from the network.

There should be a switch on the power supply. See the image below. It is the red switch above the LED. You will need a flat head screwdriver to change its position.

Leave the current (voltage) setting to the other setting and then drag it to the initial position (local network voltage). You have just reset your PSU with the procedure I described. If your PC is always the same question, then replace with a new PCU.

Best regards
ERICO

Tags: HP Desktops

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