Windows 7 can not boot

[hamezare]

Hi
I have Windows 7 on an old pc
But I forgot my Windows login password
And I can't remove the password with Buttable Recovery,
Because boot menu does not appear with none of the keys F1 _ F12
I want to install new windows
But cannot boot and is error
It does not boot at all with the DVD and the flash memory boot

 

[hamezare]

please help
???