HP 8300 won't start up, 4 beeps and 4 red lights observed.Solved/Closed

Question

Hello, 

I had a problem with my HP desktop. When I plug in the AC cord, I already hear beeps and red light flashing. And when I tried to power it on, nothing happened (no fan turning) so I believed it was a power supply issue. But when I replaced with a new PSU, same error occurred.

Now I disconnected almost all connectors on my motherboard. What is left connected were wires from new PSU, internal speaker (to hear the beeps), processor heat sink fan, memory RAM and power button/LED connector. But same result.. 4 beeps and red light flashing... Even without pressing the power on button!!

PLEASE HELP !!!!!..

asifnaqwi · Accepted Answer

i have also replaced psu with new one , reseated RAMs, still the problem is there with four  flashing lights and beeps. I think it is integrated graphic chipset or cmos battery should be removed for few minutes.

Here are some workarounds you might want to try : https://ccm.net/computing/hardware/1527-how-to-recognize-computer-beeps/

HP 8300 won't start up, 4 beeps and 4 red lights observed.

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