my calendar gets reset to the year 7510 - can't figure out what is causing it.. I am up to date with antivirus.. but this has happened 6 times now since I bought my new system (dell studio one with Windows 7) in February of 2010. (once it reset to 1608) It has just now happend 2 times this weekend, but I can't figure out what is doing it. Searched the internet and can't find any references to it. To reset the calendar, I have to hold down the button and go backwards month by month from 2099 to 2010 - it takes about 10 miinutes! - is there a better way to fix the calendar until I figure out how to stop the calendar reset?

Hi Fairview, This issue can be caused by the factors such as : - Your computer's clock is not synchronizing with the Internet Time Server correctly. - Third party software is changing the time. - The CMOS Battery is leaking. Please try the following suggestions to check this issue: 1. Go to Start -> Control Panel -> Date and Time. 2. Click the "Internet Time" tab, click "Change settings…", and then remove the check mark from "Synchronize with an Internet time server". 3. Click "OK". For more information, please refer to: Set the clock If this issue persists, I suggest we boot into Safe Mode (Restart computer, press the F8 key when the boot menu pops up, select [Safe Mode], and boot up) and check if the issue still occurs. If it does not occur, we can conclude that the cause is some third party programs. Please continue to see if it occurs in Clean Boot. If the issue disappears in the Clean Boot environment, you can continue to narrow down which entry is causing the issue. If it persists in Safe Mode, the most likely reason is that the motherboard CMOS battery is leaking. Actually, the system clock of Windows operating systems is reading the time/date from the BIOS (BIOS is the program based on the CMOS structure). If the CMOS battery is leaking, it cannot remember the correct time after shutting down. Therefore, after restarting your computer, Windows reads the wrong time/date from the BIOS. To resolve this issue, you will need to replace CMOS battery. Please understand that improper modification on the BIOS/CMOS may prevent the computer from booting up properly; BIOS/CMOS issues should be supported by the motherboard manufacturer because the BIOS/CMOS on different motherboards may have different modification interfaces. Therefore I suggest you refer to your motherboard manual about how to perform the related operations. You may also contact your computer vendor for further information. Regards, Linda