Date and time will not stay set

Hi philco1977,

Good day. The BIOS prompts you to press F1 key and reset the time and date in your system. This is caused by a CMOS battery that needs to be replaced in your motherboard which is unable to save the time and settings in your computer. In order to replace the CMOS battery, you must open your computer and in the motherboard you may see a coin cell battery. You can take it out using you hand or you may use a flat screw driver or a knife. Make it sure that when you do the replacement the computer must be turned off. Once you are done with the replacement you may have to go again to the BIOS and reset the settings again including the time and date and it will never prompt you anymore to reset you time and date settings.

Thanks,

allanhunt

If the Date/Time menu appears when the camera power is turned on, the date battery charge is low and the date and time settings have been lost. Please purchase a lithium coin battery (CR1220) and replace it as follows.

1. Confirm that the camera power is turned off.
2. Slide the memory card slot / battery cover lock and open the cover.
3. Hook your nail onto the date battery holder and lightly pull up.
4. Remove the battery holder in the direction indicated by the arrow. 5. Remove the battery by pulling it up in the direction indicated by the arrow.
6. Insert a new battery with the (-) side facing up.
7. Replace the battery holder and close the memory card slot / battery cover.
8. When the Date/Time menu appears set the date and time.

have you check the settings for time and date have you saved it? You can also try to remove the cam battry for 2 mins. then put it back in then turn on the camera and then after few secs. turn it off, then see if the issue persist.

Hello friend,
you can try to reset factory the camera and configure it from the beginning. if this doesn't fix the issue that means that the internal ROM (memory) is broken and doesn't save settings and you may contact the reseller if it's still under warranty.
Best Regards,

Memory battery present?? (coin type)

Either the replacement battery was dead or the camera needs to be serviced. If the date/time needs to be reset every time the camera powers up, the camera is not receiving the power it needs from the date battery.

Very often the date/time is maintained by a very small watch type battery built into the main board - there is no opportunity to replace this.

Solution: Replacing the date battery PowerShot A510 and A520

Replacing the Date Battery If the Date/Time menu appears when the camera power is turned on, the date battery charge is low and the date and time settings have been lost. Please purchase a lithium coin battery (CR1220) and replace it as follows.
Please note that the first date battery may appear to expire relatively quickly after you purchase the camera. This is because it is installed in the camera at the point of manufacture, not when you make the purchase. Be particularly careful to keep the date batteries out of the reach of children. Seek medical assistance immediately if a child swallows a battery since corrosive battery fluids could damage the stomach or intestinal wall.

1. Confirm that the camera is turned off.
   
   
2. Open the terminal cover and use your finger nail to pull out the battery holder.
   
   
   
   
3. Pull open the battery holder in the direction indicated by the arrow (1). Remove the battery by pulling it up in the direction indicated by the arrow (2).
   
   
   
   
4. Insert a new battery with the ( ) side facing up.
   
   
5. Replace the battery holder back and close the terminal cover.
   
   
6. When the Date/Time menu appears, set the date and time.
   
   

After purchasing the camera and turning on the power for the first time, although the Date/Time menu will appear, you do not need to replace the date battery. If you ever dispose of your camera, first remove the date battery for recycling according to the recycling system of your country.

go to mechanic

There is not an option to remember the date/time when you power off the camera. The camera should always remember the time. If it forgets the setting when you power it off then your backup battery has gone dead. Check your manual to see if it is something you can replace yourself. I am not familiar with this camera specifically but some cameras make the backup battery accessible and some require disassembly. David Millier Advance Camera Repair