Bios beeps 5 times when both igpu and dgpu are enabled.

[Bhavasagar]

I am using UEFI boot with csm disabled, when I use either igpu or dgpu pc boots fine but when I enable both igpu and dgpu in bios pc beeps 5 times at startup but everything works fine. Why's the pc beeping?
Thanks in advance.

 

[Gahl1k]

Motherboard and CPU?

 

[Bhavasagar]

When I use only dgpu system boots fine but when I enable both to use quick sync pc beeps 5 times before boot but everything seems to work fine.

 

[Gahl1k]

Do you notice date/time change from the last time you used your PC (like shutting down your PC at 00:00AM August 31th, 2017, turn it on again, and find it at 02:00PM January 1st, or time not synchronizing right with your local time)? This is Real Time Clock power fail, which indicates a CMOS battery failure, generally.

 

[Bhavasagar]

Actually it's my gpu it doesn't support UEFI so when I Disable csm in bios the pc beeps. I updated my GPU bios to UEFI version now it's not beeping any more.