When I start up my computer I get the error message" You are in safe mode. Please resetting cpu frequency in cmos.

The computer is an Acer Aspire T180
2.00 gigahertz Amd Athlon 64 x2 Dual Core
Board: Acer Em61 SM/EM61PM
BUS CLOCK: 201 MEGAHERTZ
BIOS: Phoenix Technologies, LTD R01-B1

If I go into BIOS it will then start-up