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BIOS have correct date and time, but after Windows 7 installation system show date and time 6 year earlier (2012). When you set time in Windows suddenly bios date is set to 2024. Hardware is Acer 5741g.
What could cause this problem and how to fix this?
lluke
Posted 2018-06-21T11:30:41.823
Reputation: 464
Your Windows 7 installation is fully patched? I would make sure your system can reach your time server – Ramhound – 2018-06-21T11:41:38.380
I mesure voltage over BIOS battery it shows 2,7V. On the Battery there is indication 3V. Should I replace battery? – lluke – 2018-06-22T15:54:54.763
Do you mean the CMOS battery? Proper terminology is really important to use. – Ramhound – 2018-06-22T20:26:39.257
Yes. Voltage at CMOS battery is 2.7V. Other bios options are preserved if changed. Only date/time is changing by itself all the time. – lluke – 2018-06-23T14:09:00.643
It’s a worth a try but honestly I suspect your unable then communicate with a time server – Ramhound – 2018-06-23T19:40:00.750
I need to clear it. Date/time changes after laptop restart. Date/time is correct after i connect to server. Also there is weird issue when I change something at BIOS and save, some Windows tray icons are not visible. they appear after second restart(without changing BIOS settings) – lluke – 2018-06-24T06:37:24.593
In this case I would recommend to change the CMOS battery! – duDE – 2018-06-28T09:30:53.983