NVRAM is not the RAM that you install. It actually stands for Non-Volatile RAM. It is used for things that need to stay on yoru computer. It comes in a couple forms PROM, EPROM, EEPROM, and Flash.
PROM stands for Programmed Read Only Memory (once it is programed it can never be erased)
EPROM stands for Erasable PROM (they have to use a UV light to erase it and then it can be rewriten)
and EEPROM stands for Electronically EPROM (can just reprogram)
Depending on what you computer is having problems with it will prolly need a new motherboard. or a new memory chip...
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