that about says it all i guess. do you think undervolting will be a fix for the time being until i get a new mobo?im pretty sure a320 doesnt supports overclocking or PBO
anyway found this post in asrock forums, its from revision 4.0 of that board with similar symptoms and same CPU
https://forum.asrock.com/forum_posts.asp?TID=23457&title=a320m-hdv-r4-0-and-5600x