Bios inaccessible

Hi, I am soham.
I installed prime android os in my laptop lenevo g 580, then it showed in legacy option ad prime od came first, so I installed easy bcd in my windows 7 os and arrange which one to be first, then I restarted but there was no prime os option, so I tried many times then I went to bios setup and canged the legacy to uefi but the secure boot was on. then after that I cant access anythimg, neither, bios, nor windows nor prime os. even I pressed the nova bios recovery botton but bios setup option is also not working and in the screen it is showing
secure boot access denied. I have tried removing, cmos, battery and all the bootable usbs but no result.
please someone help me
 
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