claretjules
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Registered: 02-2005
Location: Car Shopping!
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PC Time/Date Loss - ? BIOS Battery ?
Hi Wizard, wonder if you can help.
Shut down my comp as normal few days ago, but since turned it back on a new page keeps coming up and I have to press F1 to start it up (can't remember exactly what it says, if you need to know I will write it down).
It then starts up Ok but the time and date is always on 31 Dec 2001 and time completely wrong. Keep changing it but next time it is wrong again. So when go on websites it keeps telling me their safety certs are not valid etc. Any idea? I am not very computer literate so keep it simples 
Thanks
The Wizard3, 21/8/09, 0:07
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2/8/09, 11:46
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claretjules
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Registered: 02-2005
Location: Car Shopping!
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Re: Time/Date Loss
Ok thanks Wiz, here goes
Comp is Packard Bell desktop, with windows xp.
Not sure if you need all this but it says
Main processor AMD Athlon (tm) xp1900+
Memory testing 524288k ok
Primary master ST380012A 4.04
primary slave None
Secondary master HL-DT-STDVD-ROM GDR8161B 004S
Secondary slave HL-DT-ST GCE 8481B 2.03
CMOS checksum error Defaults loaded
Press F1 to contine, or F2 enter setup
07/15/2003 n-vidia-CLUSHI-6A61AM49C-00
I have been pressing F1 and comp starts up fine, but date is always on 31 Dec 2001 and time set at 23.05.
Thanks again
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4/8/09, 18:40
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The Wizard3
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Location: Castle Belgalor
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Re: Time/Date Loss
Well, I've telephoned my friend for a second opinion and he too says it is more likely your cmos battery on your motherboard that needs replacing.
This is a straight forward procedure that is easy to do. So lets go..
First, unplug your computer from the mains
Take out your power cable from the back of the tower.
Wearing latex gloves or an earth lead, unscrew the screws that hold on the panel of your tower. Mine here has a lever that I just pull and it releases the panel. If you have to use a screwdriver to get your panel off make sure you earth it before touching actual screws in case there is a build up of static.
Once your cover is off you will see your motherboard battery quite clearly as it's the same size as a ten pence piece.
Before you remove the battery, unplug the power cable from the motherboard as you may have some charge left in the motherboard itself. This is important as you don't want any static being discharged whilst the inside of the tower is exposed.
Here is a pic I've taken tonight of the actual motherboard power cable...
When removed, it will look like this, just to show you the perspective of it. Note the green slots are the memory slots so if your not sure what lead is the power lead, aim for that area..
Once you've done all that, it's time to take out the battery. There will be a small catch on the side where the battery is sat, press with a finger nail and the battery should pop out.
You will see the contact which looks like a small spring underneath it. Once the battery is removed check for the number.
Most batteries of this description have a serial of CR 2032 but check what it says on yours though before buying a new one. New ones can be picked up from any computer shop / camera shop and cost roughly around £5.
Once you've got your new battery, pop it back into the slot, place it back in so it goes underneath the lips and it should then click into place.
Replace the motherboard power lead, close up the panel to the tower, re-connect the power lead to the back of the tower.
Turn on your computer again and hopefully the error messages will have gone away. The only thing you may have to do is set the time in the BIOS.
When you restart your computer, press the DEL key to bring the BIOS screen up. You will have to use your arrow keys to navigate your way around the screen though.
Look for the clock settings and change the time to your local time. Once done move the cursor to the Save and Exit and press ENTER or it could be a Function Key you have to press, depends on the model and restart your computer.
NOTE THAT GOING INTO THE BIOS AND CHANGING STUFF IS SOMETHING TO BE VERY WARY OF, MESS UP AND THE WHOLE THING BECOMES A BIG PAPERWEIGHT
Not to put the frighteners on you but if you are not sure how to change things in the BIOS menus, get someone who definitely knows what he or she is doing.
--- 
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4/8/09, 21:32
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claretjules
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Registered: 02-2005
Location: Car Shopping!
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Re: Time/Date Loss
Many thanks Wiz to you and your friend
I shall pluck up the courage and attempt to give it a go ( or maybe get someone to do it for me).
Thanks again for taking the time to help
CJ
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5/8/09, 17:03
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