Hi @rascle1 ,
According to this link a 5 beep error code (the actual beep code is repeated 4 times) is a RTC power fail. The RTC (Real Time Clock) is powered by a non rechargeable coin cell battery sometimes called the CMOS battery. They usually have a lifespan of ~5 years
Here’s the owner manual for the laptop.
Go to p.25 to view the necessary pre-requisite steps and then the procedure to remove/replace the coin cell battery - supplier example only (should be the same for your model. Just search for C8KT2 to find suppliers that suit you).
When you remove the RTC battery the BIOS settings may be reset to default values, so if you has set any user defined settings in BIOS you may have to set them back to what you wanted them to be. If you didn’t touch any BIOS settings it is not a worry.
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