Tip & How-To about Computers & Internet
So you're PC is more than 3 years old and keeps forgetting things.
1.PC keeps forgetting Time/Date
2.CMOS CHECKSUM FAILURE
3.CMOS BATTERY STATE LOW
4.CMOS SYSTEM OPTIONS NOT SET
5.CMOS TIME AND DATE NOT SET
6.No Operating System
Why does it happen:
There is a 3 Volt lithium battery which keeps such data fresh and as any other battery, it must be replaced when depleted.
1. Get rid of any static electricity in you're body by wearing a grounded wrist strap
2. Disconnect power cable
3. You may damage the main board if battery is replaced incorrectly
4. Do not touch anything else in the computer
How to do fix it:
3. Remove side cover of desktop (some have screws and some just a simple lock and slide)
(it should be the left cover (front facing) you and whole cover in case of a slim case)
4. Locate a shiny rounded metal which looks like a coin and reads CR2032 (may be found in watch repair shops, Radio Shack, etc..)
some PCs use a cylinder type battery a technician may be required to replace itt.
5. Remove battery
6. Replace it with a fresh one keeping in mind orientation of battery (the + sign on top in case of horizontal mounting)
7. Put back cover
8. Connect power cable
9. Boot PC and press "DEL" or "F2" (may be different) depending on vendor to enter setup and update relevant data (Time/Date,on-board raid, etc..)
10. Press F10 to save and exit
please rate for more sharings... Thanks
Posted by nadir... on
Apr 21, 2009 | Dell (2336V) Motherboard
Nov 13, 2007 | E-Machines eMachines Desktop PC
256 people viewed this tip
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