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Windows XP time loses sync on reboot.

lowrider69

Senior member
Hi, I was working on a Dell laptop with XP on it that had a issue where the time would lose sync by about a half hour, give or take, after I would reboot it. I would just restart it. There's also no CMOS checksum errors on post. It was plugged in and had a battery in it. Now i've dealt with time sync issues before, usually with a CMOS battery the time loss is all over the place from what I have experienced and after the machine has been turned off for a while.

As for software, usually with a time zone issue you're back or ahead a certain number of hours, not half hours. The time was synchronizing with time.windows.com and I set the correct time zone and date. I tested it manually and it would sync and display the correct time. There was some malware on the system that I cleaned up and it was running fine otherwise. If it were a desktop I probably would have switched the CMOS battery out already to eliminate that. With a laptop there's more work involved and I was out of time so that might be part II.

Any suggestions as to what may be the issue?
 
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It is the same in laptops. The unit is often called the backup battery. Each OEM has its own proprietary unit. In my Lenovo T510, it looks like this and is accessed under the keyboard. (You need the maintenance manual for your unit.)
cmosT510.jpg


In my T60, it is an R60 battery - but similarly located.
 
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