Computer double beeping and changing date and time.

[yoshi986]

Hello. For the last few months almost every time I turn on my computer it will double beep(instead of one beep) and once I get to my desktop the date will go back to January 1st, 2011. If this is not the right spot to put this then please move it.

 

[Ranger4]

This is usually caused by a flat CMOS battery. This battery is used as a back up battery for keeping time & date etc. when the computer is shut down.
Firstly enter the BIOS & make a note of all the settings as they are now.
Turn off & disconnect the main power lead & then remove one of the panels you should be able to see this battery. In most cases it is 3 volt 2032 lithium battery.
Remove it carefully & leave it out for at least a minute & then fit the new battery. Replace the side panel, reconnect the power lead & power up, then enter the BIOS & reset the time & date & make sure all the settings are the same as they were before.

 

[yoshi986]

Should this have happened on a 2-3 year old computer?

 

[Ranger4]

It can. Batteries can go flat at any time & it does also depend on hold long the battery had been in stock before being fitted.