Can you upgrade your ram by buying the exact model again?

Solution
well if you look at your motherboard you will see in the lower left a small silver circle that looks like a watch battery, this is the CMOS battery it powers a circuit that holds the settings for your CMOS settings. Resetting this will set the settings to default, this will also mean you will need to re set your system time. So first try installing the memory without clearing the CMOS if it works without clearing then there will be no need to clear it. (To see if the RAM is discovered when windows starts find system information and there will be a place that says system memory, this is the amount of RAM you have) so in a nutshell the CMOS battery is a battery that keeps settings from resetting to default and clearing it resets these...
well if you look at your motherboard you will see in the lower left a small silver circle that looks like a watch battery, this is the CMOS battery it powers a circuit that holds the settings for your CMOS settings. Resetting this will set the settings to default, this will also mean you will need to re set your system time. So first try installing the memory without clearing the CMOS if it works without clearing then there will be no need to clear it. (To see if the RAM is discovered when windows starts find system information and there will be a place that says system memory, this is the amount of RAM you have) so in a nutshell the CMOS battery is a battery that keeps settings from resetting to default and clearing it resets these settings.
 
Solution