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- HP z240SFF won't power on

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12-18-2019 08:10 AM
I have an HP Z240SFF desktop PC that won't turn on. I highly suspect the PSU and am currently waiting for a replacement but wanted to confirm if there is a blinking light rapidly blinking on the motherboard when the PC is plugged in, does that indicate the power supply or is the whole motherboard possibly fried? I would think it wouldn't blink at all if it were the motherboard...thoughts?
12-18-2019 02:51 PM - edited 12-18-2019 03:25 PM
Greetings,
Welcome back to the forum.
I am not a HP employee.
Checked your PC's Service Guide (Link) for MB error codes, could not find MB LED error codes. I might have missed it.
A blinking MB LED could indicate some type of hardware problem.
Check/reseat all MB connections and components, only use a monitor to see if you can POST.
I would have started troubleshooting the power supply, as you are doing, if I owned this product.
Regards
12-19-2019 07:34 AM - edited 12-19-2019 07:49 AM
Hi,
Sorry to hear that.
I would try a POST with only RAM plus the CPU and CPU cooler installed in the MB to see what happens.
Then try no RAM to see if you get a POST error code.
Swap the sticks of RAM in each memory socket to see what happens.
A bad component connected to the MB can sometimes cause problems.
Regards