wd for mac powers on when plugged in then shuts off

The power supply voltage switch, a small red switch on the back of the power supply, may be on the wrong setting. Power supply issues Power supply voltage switch Plug in the power cord and turn the computer on to see if the issue is resolved. Make sure the modules are firmly seated and the clamps on both sides of the modules snap into place. It also is important to note that memory modules are installed in pairs, and sometimes in matching slots, which are designated by matching colors. To do this, open the computer, remove the memory modules from their slots, and gently reseat them. Verify the memory modules are properly seated in the memory slots on the motherboard.

If you hear what sounds like small rocks banging around, you likely have loose screws inside the case.

Lift your computer and gently rotate it while gently shaking it from side to side. Computers are full of screws, as they hold nearly every internal component in place, and from time to time, they can come loose. Electrical shortĪn electrical short in a computer, which may cause power issues, happens when pieces of metal cause a path for electricity to flow through that shouldn't exist. If the computer stays powered on, the surge protector or battery back-up unit is bad and needs to be replaced. Turn on the computer to see if the problem persists. If this situation applies to your computer, unplug its power cord from the surge protector or battery back-up unit, and plug it directly into a wall outlet. As computers require a specific amount of power to operate, too great a reduction can force the computer to shut down. Surge protectors and battery back-up units can go bad over time, causing reduced power flow to the computer. It's a shame, because I went for a Seasonic X-series to make sure I avoided just this sort of thing happening - but there you go.īut yeah, even bulletproof brands like Seasonic go sideways sometimes.Sometimes, the best way to verify a cable is not loose is to disconnect and reconnect ( reseat) the cable on both ends.

It'll light up the board, but won't provide enough power to even get just the board and CPU to bios - it just clicks off as soon as I hit the power button. I shorted the PSU before I hooked everything up, as I always do, but since it fried my system it too is pretty much dead. So my Sabertooth will enter Bios, but gives me all kinds of weird notices relating to things that are not actually happening, but it won't enter bios with any actual devices plugged into it. With my hard drives down I can't currently test my GPUs, but if they've gone too then this could get very expensive. I've set up a test rig and gone through one part at a time and it turns out my main mobo, both my HDDs and for some reason a Sata power cable are all fried. Thanks for the replies but it turns out I got a dodgy PSU that has fried my system.

Wd for mac powers on when plugged in then shuts off