I am trying to fix a computer that has died a few months ago. It initially had a Gigabyte 970A-UD3P motherboard. When testing this with only the CPU installed, the computer would only turn on for a brief moment when pushing the power button and when releasing it. There was also no beep. Figuring it would be a dead motherboard, I bought a new one, the Asus M5A97 R2.0.
While installing this motherboard, I turned it on from time to time throughout the process, and it looked promising, as it was giving beeps and the computer stayed on. I turned it off by holding the power button for a few seconds. When it was completed, it beeped once long and twice short, which corresponds to no memory being detected. I tried putting the RAM (1x8GB) in different slots, but it would continue giving this error. Then I removed the RAM and disconnected everything besides the motherboard from the PSU, and suddenly there was no beep anymore. I plugged the RAM back in and there was still no beep code.
Thinking it was solved, I connected everything again and hooked it up to a monitor with an HDMI cable, but there was no display. Then when I wanted to turn it off, holding the power button did not do anything. I had to flip the switch on the PSU to turn the computer off.
Then I detached everything, so it was only the motherboard and CPU, and I turned it on again. The PSU and CPU fans spun and the motherboard LED was on, but there was no beep and holding the power button did not do anything. Then I wanted to detach the CPU, but when trying to detach the heatsink, the CPU accidentally got pulled with it. I checked the pins on the CPU and they seem to be all fine. Now without the CPU, the motherboard powers up fine and it can also be shut down by holding the power button (still no beep). However, when I install the CPU again, both with and without the heatsink, there is no beep and holding the power button does not do anything.
I have spent several hours searching for a solution to this particular problem, but I cannot find anything. I have tried another, known to be working, PSU in this setup with the exact same results. I have tried the RAM in a working computer and it works fine. Putting the RAM in the motherboard with the CPU does not give other results. I tried clearing the CMOS RTC RAM and removing the battery, to no avail.
By this time I think the CPU is defect, as the motherboard is brand new and seemed to work fine during installation after every few steps, the PSU works in another computer and another PSU gives the same results in this setup, and the RAM works fine in another computer. I am all out of ideas and I was wondering whether anyone has suggestions.
While installing this motherboard, I turned it on from time to time throughout the process, and it looked promising, as it was giving beeps and the computer stayed on. I turned it off by holding the power button for a few seconds. When it was completed, it beeped once long and twice short, which corresponds to no memory being detected. I tried putting the RAM (1x8GB) in different slots, but it would continue giving this error. Then I removed the RAM and disconnected everything besides the motherboard from the PSU, and suddenly there was no beep anymore. I plugged the RAM back in and there was still no beep code.
Thinking it was solved, I connected everything again and hooked it up to a monitor with an HDMI cable, but there was no display. Then when I wanted to turn it off, holding the power button did not do anything. I had to flip the switch on the PSU to turn the computer off.
Then I detached everything, so it was only the motherboard and CPU, and I turned it on again. The PSU and CPU fans spun and the motherboard LED was on, but there was no beep and holding the power button did not do anything. Then I wanted to detach the CPU, but when trying to detach the heatsink, the CPU accidentally got pulled with it. I checked the pins on the CPU and they seem to be all fine. Now without the CPU, the motherboard powers up fine and it can also be shut down by holding the power button (still no beep). However, when I install the CPU again, both with and without the heatsink, there is no beep and holding the power button does not do anything.
I have spent several hours searching for a solution to this particular problem, but I cannot find anything. I have tried another, known to be working, PSU in this setup with the exact same results. I have tried the RAM in a working computer and it works fine. Putting the RAM in the motherboard with the CPU does not give other results. I tried clearing the CMOS RTC RAM and removing the battery, to no avail.
By this time I think the CPU is defect, as the motherboard is brand new and seemed to work fine during installation after every few steps, the PSU works in another computer and another PSU gives the same results in this setup, and the RAM works fine in another computer. I am all out of ideas and I was wondering whether anyone has suggestions.
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