CMOS checksum error, BIOS Setup hangs, Unable to boot from disks

[pingpong]

Hi,

I have the following problem with my desktop with 2-3 years old:

After POST test, below is shown:

CMOS checksum error - default loaded.

F1-continue, del-bios

If I enter into BIOS setup, it hangs most the times after a few seconds. Plus, the text becomes blurred.

It cannot boot from USB flash drives, or dvd-rom, or hd.

My PC configuration:
p5n73-cm
hard drive
memory
dvd rom

 

[johnb35]

Sounds like you need to do 2 things here.

1. Replace the cmos battery
2. Reset the cmos - Remove power from the power supply, remove cmos battery from motherboard, press the power button ont he case a few times to discharge any remaining power, then wait 5 minutes. Then reinsert a new cmos battery and reconnectd power to power supply and try booting up. You may need to change settings in the bios if you had any special settings setup.