No output from screen, input devices remain inactive
No output from screen, input devices remain inactive
Recently I swapped out a poor stock cooler on my Dell Inspiron 560 for one that could handle the processor I just replaced (Intel Core2 Quad Q9550). After cleaning the old thermal paste from the CPU, I installed the new cooler and powered on the PC. The power button turned orange, and nothing functioned—keyboard, mouse, and screen were unresponsive. Once everything was working fine, the issue began. I double-checked the CPU placement and connections, but nothing changed. Could anyone help identify the problem? If you have any suggestions, please let me know!
I purchased this cooler from a business named AVC through Amazon for approximately 42 dollars plus shipping. I included the cooler here just in case I overlooked something. I was confident it would fit my old 775 CPU AVC Socket-775 (only compatible with Intel LGA775) CPU cooler, which is a heavy-duty heatsink with copper piping. The cooler came with a 4-pin plug that includes PWM functionality, and I didn’t damage anything on the motherboard. There was no plastic wrap left on it, and I applied fresh thermal paste before installing it.
That’s not the main problem—it’s that my PC isn’t showing anything at all. All my devices fail to turn on, even though the OEM power supply seems to be working properly. I’m stuck because similar issues appear with CPUs and motherboards when they fail.
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