I INSTALLED A NEW CMOS BATTERY BUT STILL NO EFFECT

Just replacing the battery will not set anything. You have to do the setting of the values. If you can run setup by pressing F1, then do that and set all the settings and then save before exiting. Make sure you save the settings by choosing the correct exit and re-boot option.
If the settings cannot be set nor saved, then make sure the poser is off or pull the plug from the wall outlet, then short the bios with the jumper to short the bios. This will reset the bios to the default settings. Turn on the system and then go to the bios settings and set the settings. Then use the reboot option to save the settings.

Check that the battery was installed the correct way up.
You will also have to reset time/date once after a new battery is installed.

Hi,
The error message is telling you that your Bios settings are not right. You should enter your Bios and you can set date, time, etc.

This may be helpful...

http://www.cyberwalker.com/article/28

Hank