Hi Otway1,
Welcome to Dell Community Forum.
5 beep codes generally indicate RTC Power Fail/CMOS failure and if you are comfortable replacing the battery yourself, you can definitely do so. However, we request you to be cautious and follow relevant precautionary measures prior to opening the chassis.
For further information, click on the link below for a list of beep codes and error messages for your Vostro system.
Please provide us the complete system model so that we are able to provide you with a link for the manual and documentation for your Vostro computer. The manual would have details on how to disassemble your computer.
Let me know if further help is needed.
Thanks and regards,
Babita S
#iworkforDell
For easy access to drivers, manuals and product updates, please visit our Support Site .