It`s either votage, or down to the type of memory you have fitted to the laptop.
You will have to pull a memory stick out of the laptop and read the specifications of it, found on the sticker on the memory module.
DDR memory comes in two types standard buffered, or un buffered memory.
And the second type comes with EEC corection.
If you find you have EEC rated memory.
Then in the bios of the laptop that option to enable the EEC feature should be enabled in your bios to avoid memory errors being generated in windows.
If the memory is standard DDR memory make sure the EEC option for memory in the bios is disabled, running standard memory with EEC mode enabled in the laptop bios will also cause errors.
It will be one or the other, if you find there is no means to change the voltage of the memory modules in the laptops bios ok.