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LaineyB1
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HP Recommended
Pavilion desktop 595
Microsoft Windows 10 (64-bit)

When I turn on the computer the hp symbol comes up, then a message in red..secure boot violation, invalid signature detected, check secure boot policy in set up. When I press ok it goes to a blue message..boot device not found, install an operating system on your hard disk (3FO)

I have followed several procedures but nothing is working, hard drive quick test, system quick test, all have passed. Legacy boot sources is disabled, have unplugged the power cord, taken the computer apart and unplugged the cables on the inside and plugged back in. I can go into f2 and f10 but I can’t go into f11 to do a windows recovery. Please help if you can. Is there a live version of support because the virtual did not help at all. Thank you

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