Hello Manikumar, thanks for contacting us through communities. In regards to your question, please let me know if the motherboard used to work?
If you remove all memory, are you getting beeps?
Could you remove the CMOS battery and leave the system without it for about an hour. Then put it back on and restart the system.
We recommend customers to test the system out of the chassis
If you are not getting beeps when testing the motherboard without memory, I’m pretty sure it needs to be replaced.
Please check with our Warranty department if the board is still under warranty