Can't get new pc to work

loolme

Distinguished
May 30, 2011
42
0
18,530
hello
I just upgrade my pc today
i7 4770k
r9 290x
Asus B85 MOTHERBOARD
2 tb Hard drive
750w power supply

So i install everything and seems to be working
however when i start my pc it says enter bios or computer will shut off in 15 secounds
but the mother board does not see my devices (keyboard and mice), so i can't enter my bios

Also don't know if this is the issue or not, but the hard drive was from my old pc, so it already has a os on it and im trying to format it but can't because of this issue

please help thanks