Good morning, I have an H81M-K motherboard that has been experiencing the following problem for a few days: when turned on it produces a single beep and restarts in an endless loop always producing the single beep. I proceeded to change the RAM module, reset the bios, try another power supply, but without changing this state. By completely removing the RAM the system produces the expected bios which signal the absence of RAM modules, so in a certain sense the motherboard still responds. Except that I have no idea what the single beep that leads to rebooting the system signals, in the sense that I don't know how to interpret it. If anyone has any suggestions, I sincerely thank you.