Wenever i boot my pc it tell cmos setting wrong,keyboard/interface problem & no keyboard detected

probably set to USB or external as first boot device change in Bios

you have to run the DRIVERS CD FIRST.

Try another keyboard. USB or PS2

It sounds like a ram problem, what error beeps are you getting when first booting. The ram will make all fail if faulty, if you have two banks of ram remove one and reboot, if problem the same remove the other and replace the first, If you have boot success it is the ram, has some one told you it was the power because they were wrong, has there been a storm recently, as a last resort I would reset the cmos to default, you will of course need to re-set the boot order etc, let me know how it goes please

your laptop can't detect your hardisk drive
first- go to cmos setup of your laptop then check if your harddisk is installed
second- make your hdd on first boot.
then exit and save your settings
if no harddisk apear in your cmos setting your hardisk dirve has worn out or dead
you have to replace it and reinstall the software..

CMOS checksum errors
Explanation: A checksum is computed as an error-detecting code, to protect the BIOS settings stored in the CMOS memory. Each time the system is booted this number is recomputed and checked against the stored value. If they do not match, an error message is generated to tell you that the CMOS memory contents may have been corrupted and therefore some settings may be wrong. BIOSes react in different ways to encountering this sort of error. Some will warn the user and then continue on with whatever settings were in the CMOS. Others will assume that the settings that were in the CMOS were corrupted and will load default values stored in the BIOS chip "for safety reasons". The error message will indicate which your system is doing.
Diagnosis: The most common cause of checksum errors in CMOS is a battery that is losing power. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values.
Recommendation: Follow the instructions in this section to address the CMOS corruption. You should make sure that all of the BIOS settings in the system are correct, by rebooting the system, going into BIOS setup and double-checking all the values (hopefully against a recent BIOS settings backup).

check bios settings and enable kboard usb settings is ok, save to cmos and reboot

Your CMOS battery is probably dead. You can replace it or just keep runnung setup each time you boot. Your choice!

Try resetting your CMOS chip and restart. Wait for the PC to tell you that the setting have changed and press the corresponding key to enter the BIOS settings. Refer to your Motherboards manual as to how to navigate through the Bios settings and change the setting for your SATA connection to Automatic.

You need to press F1 and go into the BIOS to setup and detect everything. You will need to set the date, verify it detects your hard drive and memory, and enable/disable items as you need for your system.

Once it looks good, do a Save and Exit.