It is best to try the steps below.
Try to do a CMOS clear of the board.
Put the bios jumper to the maintenance/configuration mode.
Boot the system with minimum configuration (the rest disconnected)
PSU + Motherboard + CPU + 1 Memory Module only.
Put back the jumper to default position if the system boots.
If it is not booting, remove the memory to check if the board issues any beeps
Then last thing to do is to recover the bios using the Recovery Method
try a bios recovery using a formatted USB media.
Instructions for Recovery BIOS Updates
The recovery process requires the chassis to be opened to remove the onboard BIOS Configuration Jumper.
Recovery with Formatted USB Stick
1. Copy the recovery file (*.bio) to a formatted usb disk.
2. Place the usb disk in the target system.
3. Shut down the system and unplug AC power.
4. Open the chassis and remove the BIOS Configuration Jumper. See the Technical Product Specification for details including the location of this jumper.
5. Power the system on.
6. Wait 2-5 minutes for the update to complete. When the usb drive LED is lit, the system is copying the recovery code into the FLASH device.
7. System will either turn off when the recovery process is completed or it will prompt you to turn off the system.
8. Remove usb disk
9. Replace the BIOS Configuration Jumper.
10. Restart system.
Note: these can be found on:
If you have any other CPU, test it./ Test the system out of the chassis. Use a screwdriver to power on the board, disconnect the front panel.