my system 2gb ddr3 1333mhz i am bye new 4gb ddr3 1333mhz i am inset power can not no my pc why???

Pmr23

Commendable
Aug 10, 2016
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my system 2gb ddr3 1333mhz i am bye new 4gb ddr3 1333mhz i am inset power can not no my pc why???
 
Post your computer make and model including case size ( tower, desktop, small form). List the number of memory sticks you have. It should be an even number.
Or go to Crucial.com and use their memory finder program. It will tell you what will work in your computer. Then compare it to what you bought.