Cmos Battery
Motherboards also have a slot for a small lithium rechargeable battery. The space for the battery on the motherboard is usually small and round. It is usually the only space on the motherboard that the battery may fit into. This battery has a life span of about 4 years after which it, like all things dies and cannot hold charge anymore. Then it needs to be replaced. It is this battery that keeps the system from losing the contents of the Cmos, like your Bios settings. The battery rarely goes bad, you will know because:
1. The system will start to experience slow clock. By this we mean the stuff that tells you what time it is and not the system or bus clock which is different.
2. You may sometimes get such error messages as checksum error, simply put, the battery is almost dead that once the PC power is turned off and the battery is supposed to come on now to maintain such things as time, but it does not because it is dead.
When the battery is completely dead and the system is turned off for a reasonably long time, you run the risk of completely losing the Bios settings. when the battery is completely dead and the Bios information has been lost ,you may continue to use the system but will also continue to continue to receive error messages and he system may prompt you to enter a certain key, may be “F1” to continue . It is usually a better idea to proceed and charge the battery and also re-enter the appropriate information in Bios sob that the system will work as before without the errors .it is very easy to replace the battery.
Locate it in the motherboard, remove it and take it to a computer dealer and purchase the replacement. You may discover that all the slow time keeping and checksum errors will disappear.
If the battery is completely dead and you have proceeded to change it, some of the errors information will need to be reset. The computer may flash an error message and actually refuse to load he operating system. It may prompt you to enter Bios and adjust the information that was lost and much of the Cmos SETUP UTILITY.
N.B: The mouse is inoperative in Bios, so to navigate in this
Screen, you may use the keyboard arrow keys, the “page up” or “page down” and sometimes even tab button on the keyboard. Navigate through Bios, correcting both the time and date. Then come down to the primary master setting, which is the term used for the main hard drive and awaken it by highlighting it.
The setting will usually either be Auto or USER. Either way, reawaken it by highlighting it and often times simply hitting the enter key on the keyboard. There should not be any more changes that need to be made since all that had happened was a dead battery that was replaced. Save the new settings and exit. The system should work like it used to and the error messages disappear.
THE MONITOR: Monitor also called visual display unit (VDU) is the output device that shows programming instructions and data as they are being input and information after it is processed.
There are two types of monitor: Cathode Ray Tube (CRT) and flat panel or flat screen (LCD).
Tips: Are there a few layers of dust on your monitor? Can you see fingerprints? Then it may be time to clean your monitor. Here are few cleaning suggestions.
1. DISCONNECT: Turn off the monitor and unplug the electricity.
2. CLEAN SCREEN: if the screen is really dirty, use an antistatic CRT cleaner. Otherwise, use a dry static free cloth to dust the screen.
3. CLEAN CABINET: clean the cabinet with a soft cloth damped with cleaning solution (never use benzene, paint, thinner or other volatile substance). Dry with soft cloth.
4. RECONNECT: Reconnect the electricity & turn on the monitor.
1. The system will start to experience slow clock. By this we mean the stuff that tells you what time it is and not the system or bus clock which is different.
2. You may sometimes get such error messages as checksum error, simply put, the battery is almost dead that once the PC power is turned off and the battery is supposed to come on now to maintain such things as time, but it does not because it is dead.
When the battery is completely dead and the system is turned off for a reasonably long time, you run the risk of completely losing the Bios settings. when the battery is completely dead and the Bios information has been lost ,you may continue to use the system but will also continue to continue to receive error messages and he system may prompt you to enter a certain key, may be “F1” to continue . It is usually a better idea to proceed and charge the battery and also re-enter the appropriate information in Bios sob that the system will work as before without the errors .it is very easy to replace the battery.
Locate it in the motherboard, remove it and take it to a computer dealer and purchase the replacement. You may discover that all the slow time keeping and checksum errors will disappear.
If the battery is completely dead and you have proceeded to change it, some of the errors information will need to be reset. The computer may flash an error message and actually refuse to load he operating system. It may prompt you to enter Bios and adjust the information that was lost and much of the Cmos SETUP UTILITY.
N.B: The mouse is inoperative in Bios, so to navigate in this
Screen, you may use the keyboard arrow keys, the “page up” or “page down” and sometimes even tab button on the keyboard. Navigate through Bios, correcting both the time and date. Then come down to the primary master setting, which is the term used for the main hard drive and awaken it by highlighting it.
The setting will usually either be Auto or USER. Either way, reawaken it by highlighting it and often times simply hitting the enter key on the keyboard. There should not be any more changes that need to be made since all that had happened was a dead battery that was replaced. Save the new settings and exit. The system should work like it used to and the error messages disappear.
THE MONITOR: Monitor also called visual display unit (VDU) is the output device that shows programming instructions and data as they are being input and information after it is processed.
There are two types of monitor: Cathode Ray Tube (CRT) and flat panel or flat screen (LCD).
Tips: Are there a few layers of dust on your monitor? Can you see fingerprints? Then it may be time to clean your monitor. Here are few cleaning suggestions.
1. DISCONNECT: Turn off the monitor and unplug the electricity.
2. CLEAN SCREEN: if the screen is really dirty, use an antistatic CRT cleaner. Otherwise, use a dry static free cloth to dust the screen.
3. CLEAN CABINET: clean the cabinet with a soft cloth damped with cleaning solution (never use benzene, paint, thinner or other volatile substance). Dry with soft cloth.
4. RECONNECT: Reconnect the electricity & turn on the monitor.
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