Unable to grasp the reason behind the computer failing to start.
Unable to grasp the reason behind the computer failing to start.
We require additional information about your previous attempts. Which processors have you tested? What amount of RAM did you use? Were these the ones that previously worked? Did the CPUs come with integrated graphics? If not, it might not be able to start without a GPU. Are there any diagnostic codes being displayed? Is the front panel header connected correctly? Have you shorted the power button pins using a screwdriver or key to eliminate the case’s power button as a possible cause of the failure? Do any fans activate at all, or does the system appear completely unresponsive?
Used an older i5-9400F for diagnostics while the newer i7 has integrated graphics; shorting the two pins hasn’t helped. A small error speaker is connected (appears correct position), MBD and PSU are fine, power indicator shows standby, RAM functioned properly, and both systems worked independently.
9400F lacks an integrated GPU, which means you won’t be able to capture an image. Also, if it’s not cooled properly, avoid running it longer than 30 seconds.