When I press the power button on my computer, the computer doesn't boot! It was working fine yesterday, but now it seems like it's broken for no reason.
Yes, all the switches are turned on.
The LED on my motherboard lights up, and when I press the power button, the CPU fan and case fan both spin for ~1 second. but nothing else happens! no monitor activity, no HDD spin, nothing. So it doesnt seem like it is a PSU problem or power switch problem (I think).
I cleaned my computer, so now it's free of dust and put fresh thermal paste on CPU/GPU. I cleaned the contacts on ram, video card, cpu.
I tested the computer to turn on without hard drive, optical drive, sound card, nothing attached except CPU, cpu cooler, psu, motherboard, video card, monitor, power cable and ram. it still didnt work.
I really don't know what to do!! how can i fix my computer?!