How can I get bios menu without no OS in computer?

Jun 27, 2018
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I have removed Windows 10 OS because of some damages.Now the system shows 'no operating system found' when it turn on.How can get bios menu to install windows?
 
Solution
You have to hit a key shortly after turning on the computer, they vary by manufacturer. Some use the Del or Delete key, others use F1 or F2, F10, etc. What model computer do you have?