Date & Time not set error, No battery detected

October 17, 2019 at 12:36:18
Specs: Windows 10, Core 2 Duo T7200
I have HP Compaq nw8440, 2 GB single DDR2 SDRAM
1- When I turn off my laptop, and turn on after an hour it shows error "Date & Time not set", and time disturbs. How to fix? is there any battery (button size) in laptop to be replace?

2- Is it happening due to the battery? Windows 10 shows in system tray "No battery is detected". By the way battery does not give a single minute of backup. When I plug out the charger pin, it turns off immediately.

Kindly help.

See More: Date & Time not set error, No battery detected

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October 17, 2019 at 13:14:27
Yup there’s a battery change required. aka a cmos battery.

This video may show where it is and how to replace it.

This manual may also be helpful in the same way

If you feel uncomfortable doing the job yourself, then a local computer store ought to know how, and not charge much?

message edited by trvlr

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October 18, 2019 at 05:19:22
I will get back to you after some time.
"battery not detected" message appears in windows 10. do I replace?

message edited by raaz_hai

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October 18, 2019 at 09:08:06
Change the cmos battery and the date, time issue ought to be resolved

If the main rechargeable battery isn’t charging... it may well be mains adapter/charger that is defective. Borrow a known good one and see if the battery charges up, and other issues resolve too.

Not being familiar with windos-10, I’m surmising that battery to which the error message refers is the main rechargeable one.

Regardless change the cmos battery as well

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Related Solutions

October 18, 2019 at 09:26:22
I have just changed the cmos battery. Let me check RAM with memtest86. I will update later about date & time not set error.

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October 18, 2019 at 09:46:12
Personally I find the best memory stick test is by substitution.

Remove one stick if two or more present and boot up. (Ensure “all” power - main battery and external charger/adapter - is removed before removing or inserting memory sticks.)

If the system is ok with the installed stick, albeit perhaps a little slow, and no error messages, then likely it's ok. Then swap out that stick for ther other and again boot rtc...

Repeat with each stick in turn...

If errors appear with a given stick then it’s suspect.

Cleaning edge connectors often removes apparent error issues.

Remove stick, clean edge connector with a soft pencil style eraser. Wipe with a soft lintless cloth - nothing abrasive to be used during cleaning routine.

Re-insert stick into its socket - firmly;; then remove and re-insert firmly again. Remove, wipe edge connector with soft cloth as before then re-insert the stick again (firmly) and leave it there.

Why the insert, remove, re-insert routine? To clean the onboard contacts too.

As before test each cleaned stick individually as above.

I’ve never found a memtest util much help in resolving possible RAM module issues. Substitution has yet to fail in that respect... And as earlier cleaning contacts is often all that is required.

Which is not to say memtext utils don’t have their place and value. Comes down to personal preferences in the end?

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October 18, 2019 at 09:59:19
Thanks trvlr. As you said, I have followed all the steps and found no beep and error.
Kindly answer the post # 9 here,

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