I Recently got a Hp Pavillion Slimline Seriers S5-1224.
Processor: Pentium G648
Memory: 4GB DDR3 1600
I Turn it on and no Boot screen. No post of any kind. No Beeps no sounds. all fans run and all lights are on but not SOS type blinks. Ive checked video cables, Internal conecctions. PSU is tested and true. Ive reset the CMOS , replaced bios battery (didnt have one). Not sure what to do. Please anyone have any ideas. Thank you.
Since the computer is over 5 years old, it could be failed memory. You can test it by removing all of the sticks and replacing them one at a time and boot. Also, I know that you say that the PSU tests good, but I suggest using this guide to troubleshoot it further. The symptoms that you are experiencing can be a failed PSU.
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