Occasional single short beep before instant power down on boot

[Jonathan_184]

Accidentally kicked my custom tower over standing up and currently when I power on my pc I get mixed messages. Just went through entirely rebuilding it looking for any visible issue of damage but none was spotted besides a usb 3.0 front panel pin broken on the mobo. Instead of using the large connector I used the attached 7 pin instead but other than that no physical damage. When I go to boot occasionally I hear 1 short beep before the computer shuts back off. If I try again however sometimes I don’t hear anything. Please help!

 

[CountMike]

One beep is usually a sign that POST was completed successfully.

 

[washingm088]

The post beep could mean that your pc failed to refresh the dRAM. I suggest turning off your pc and check each individual ram stick to see if they’re all inserted properly. Try to boot up, and if the problem still continues it could be your motherboard