System Date Revrting Back to 2002

[Faraz A. Qureshi]

I don't understand why but since the last month, one of my systems, though
maintained and corrected everytime, has been having its time again and again
be reverted back to the same date but in the year 2002.

Any reason and remedy for the same?

Thanx in advance,

Best Regards,

FARAZ A QURESHI

 

[Craig Coope]

I don't understand why but since the last month, one of my systems, though
maintained and corrected everytime, has been having its time again and again
be reverted back to the same date but in the year 2002.

Any reason and remedy for the same?

Thanx in advance,

Best Regards,

FARAZ A QURESHI

Change the CMOS battery on the motherboard.

 

[Paul]

I don't understand why but since the last month, one of my systems, though
maintained and corrected everytime, has been having its time again and again
be reverted back to the same date but in the year 2002.

Any reason and remedy for the same?

Thanx in advance,

Best Regards,

FARAZ A QURESHI

CMOS battery ?

http://images.philips.com/is/image/PhilipsConsumer/CR2032_01B-GAL-global?wid=430&hei=430&$jpglarge$

It should measure 3 volts if it is good. If the voltage drops below 2.4V,
then I'd replace it.

Also, to confirm your symptoms, does the date only change to 2002, when
the power switch on the back of the computer is set to the OFF position ?
Does the time remain correct, if the switch is still ON, on the back of
the computer ? If the time changes, when the computer is OFF at the back,
that increases the odds that the problem is with the CMOS battery.

The CMOS battery is not used all the time. If +5VSB is still running
inside the computer, that powers the clock. It is only when all power is
removed from the computer, that the CMOS battery supplies power for the
clock and CMOS RAM contents.

A computer placed in storage (with no power cord connected to AC), will
run for about 3 years from the CMOS battery. The time and BIOS contents
will be maintained for about 3 years. That is how long two of my computers
here lasted, while in storage.

Paul

 

[Ken Blake, MVP]

I don't understand why but since the last month, one of my systems, though
maintained and corrected everytime, has been having its time again and again
be reverted back to the same date but in the year 2002.

Any reason and remedy for the same?

Before anyone whose clock is running slow rushes out to buy a new
battery, he should first take note of whether he is losing time while
the computer is running or while it's powered off. If it's while
powered off, the problem *is* very likely the battery. But if it's
while running, it can *not* be the battery, because the battery isn't
used while the computer is running.

If the clock loses time while running, try this:

Open a command prompt window (Start | Run | cmd) and enter the
following commands:

net stop w32time
w32tm /unregister [ignore error message]
w32tm /unregister
w32tm /register
net start w32time

 

[Bennett Marco]

Before anyone whose clock is running slow rushes out to buy a new
battery, he should first take note of whether he is losing time while
the computer is running or while it's powered off. If it's while
powered off, the problem *is* very likely the battery. But if it's
while running, it can *not* be the battery, because the battery isn't
used while the computer is running.

As usual, one more important factor has been overlooked: the computer
must be COMPLETELY DISCONNECTED from any source of power for it to be
the battery. If it connected (doesn't matter if it's turned off), the
CMOS battery isn't being used.

If the clock loses time while running, try this:

Open a command prompt window (Start | Run | cmd) and enter the
following commands:

net stop w32time
w32tm /unregister [ignore error message]
w32tm /unregister
w32tm /register
net start w32time

 

[Bennett Marco]

CMOS battery ?

http://images.philips.com/is/image/PhilipsConsumer/CR2032_01B-GAL-global?wid=430&hei=430&$jpglarge$

It should measure 3 volts if it is good. If the voltage drops below 2.4V,
then I'd replace it.

Also, to confirm your symptoms, does the date only change to 2002, when
the power switch on the back of the computer is set to the OFF position ?
Does the time remain correct, if the switch is still ON, on the back of
the computer ? If the time changes, when the computer is OFF at the back,
that increases the odds that the problem is with the CMOS battery.

The CMOS battery is not used all the time. If +5VSB is still running
inside the computer, that powers the clock. It is only when all power is
removed from the computer, that the CMOS battery supplies power for the
clock and CMOS RAM contents.

A computer placed in storage (with no power cord connected to AC), will
run for about 3 years from the CMOS battery. The time and BIOS contents
will be maintained for about 3 years. That is how long two of my computers
here lasted, while in storage.

Paul

Paul's reply is 100% accurate and is missing nothing.

 

[Jose]

I don't understand why but since the last month, one of my systems, though
maintained and corrected everytime, has been having its time again and again
be reverted back to the same date but in the year 2002.

Any reason and remedy for the same?

Thanx in advance,

Best Regards,

FARAZ A QURESHI

When Windows boots, it doesn't know what time it is, it reads the time
from the motherboard.

If the CMOS time is wrong, the Windows time will be wrong, so you
change it manually. That works fine until Windows want to get the
time again (the wrong time) from the motherboard.

When your system boots, enter the CMOS and verify/correct the time.

Unplug the unit from the wall since "standby voltage" will keep the
system with some power even when it is powered off at the switch so
things like the power button will work.

If you set the CMOS time and it does not stick when you check it
again, replace the battery, replace the power supply, or replace the
motherboard until the CMOS time sticks when you set it. You will get
it right sooner or later.

If the CMOS time is correct and the Windows time is wrong or loses 7
years while it is running, you have another problem.

Windows has a built in mechanism to sync time, but it must be running
to do so and then it only does so on a schedule that you can change,
etc. That process usually takes care of itself.

You need to first start with the correct BIOS/CMOS time and fix that
if it is broken, or nothing after that will work the way you would
like.

This is rocket science.