Por qué mi PC se inicia con F1

Hola,

porfavor solucion soy novato siempre sale esto


press f11 for bbs popup
memory clock : 667 mhz, single channel mode
initializing usb controllers. done
20448 mb ok
usb device (s): 1 keyboard , 1 mouse
auto-detectiong sata 1 ... ide hard disk
sata 1 : samsung hd161hj gf100-07
ultra dma mode-6 , s.m art . capable and statusok
auto- detecting usb mass storge devices:
oo usb mass storage devices found and configured

cmos checksum bad
cmos date/time not set
press f1 to run setup