Hello endormmc
Thank you for your reply.
1. Just one USB boot loader i used.
2. I did remove all hard drive and disable ASUS Logo screen. Nothing shows up.
3. How do I do the checking? And in the case that it is the pat issues how can fix it now since i can not start with HD connected.
4. I did clear the bios and clear cmos but did not work too.
I think the HDD is okay, since unlikely i killed 4 HDD at once, and i did connect the HDD via a USB 6x docking and can identify the Hard Disk.
Since I am using SHR wonder how i can backup the data out now? Will the Ubuntu solution work from the https://www.synology.com/hu-hu/knowledgebase/DSM/tutorial/Storage/How_can_I_recover_data_from_my_DiskStation_using_a_PC?
If in case i need to replace the motherboard what is the recommended motherboard to replace with? Some how I do not know why but motherboard HDMI internal graphic does not work and I am running via a pci-e graphic card.