Thats normal on some systems, as that is a quite or quick boot. Most laptops have this by default and desktop systems like this.
When hit the power button start tapping either delete, F1 or F2 these are the usual buttons to get into the bios.
To me it sounds like the OS is either not being found or there is an issue with the hard drive, try reseating it.
Why the POST helps is that it will tell you if it is either the ram that is not being passed or hdd not being detected etc.
But yeah sounds like the OS is not being found.