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Windows 7: My Desktop PC cant hold a precise DATE/TIME control

29 Mar 2015   #1

Windows 7 Home Premium 64 bit
My Desktop PC cant hold a precise DATE/TIME control

Windows 7 Home 64bit is my OS.
The computer components are:
- Asus Z87 Motherboard
- Intel 4670k not overclocked
- 2 x 8GB Kingston Blu DDR3 240 pin RAM
- in 4 hours after re-setting time the time keeping shows a loss of 2 and 1/2 hours

It has been happening in the last week or so.

What could be happening?

My System SpecsSystem Spec
29 Mar 2015   #2

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit

Slowly dying CMOS battery is one cause.

Easily replaceable.

Attached Thumbnails
My Desktop PC cant hold a precise DATE/TIME control-cmos-battery.jpg  
My System SpecsSystem Spec
29 Mar 2015   #3

Windows 7 Home Premium 64 bit

Thank you ignatzatsonic

It had briefly crossed my mind too. But a motherboard bought in mid 2013 seemed too young to fail. Is your image the precise model that I need to buy? or is it a generic image of a coin battery?
Who sells these things? Home-Depot has a variety of coin batteries. Other than them, I have no idea.

Thank you for responding.
My System SpecsSystem Spec

29 Mar 2015   #4

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)

The CR2032 Battery has been used on Desktop Motherboards for many years.
It can usually be found at major chain pharmacies for $3 or less.
It is used in Blood Glucose meters for diabetics, also.

Attached Images
My Desktop PC cant hold a precise DATE/TIME control-c-mos_battery_on_mb.jpg 
My System SpecsSystem Spec
29 Mar 2015   #5

Windows 7 Home Premium 64 bit

Thank you both.
So is it a matter of just replacing the new for the old depleted within a few minutes. Do I have to take any precautions not to lose data or something worse?

Or is it just the simple swap with no other ulterior consequence?. Any issues with the CMOS?. No need to flash it right?

Thank you again
My System SpecsSystem Spec
30 Mar 2015   #6
Layback Bear

Windows 7 Pro. 64/SP-1

No one knows how long a battery will last. I keep a couple three around all the time.
I have seen brand new ones that were no good.
When you replace the battery your bios will go to default. Unless you are over clocking your bios are at default already.

You will have to set your time and date in the bios and in Windows 7.
My System SpecsSystem Spec
30 Mar 2015   #7

Windows 7 Home Premium 64 bit

Thank you Layback Bear
My System SpecsSystem Spec

 My Desktop PC cant hold a precise DATE/TIME control

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