Adding ram to my computer

[The_little_guy]

recently i want to upgrade my desktop by adding some more rams on it.

As I have checked the original rams are Kingston DDR3 1333 2GB(upper ram shown in the picture),therefore I just bought 2 of the samsung's DDR3 1333<--model:4GB 2Rx8 PC3-10600U-09-10-B0(?)

After installation,the desktop seems like to run as normal(the start button lights up and the fans is functioning)However, there is no display after installing those rams.I tried to remove all the original ones to avoid uncompatible between the new rams and the old ones but it does not work.So here is the question:Did I missed something or I just buy the wrong type of rams?

[REO51ST · Accepted solution]

Welcome to the HP Support Community @The_little_guy

8GB DDR3 Synch DRAM PC3-10600 (1066/1333 MHz) Non-ECC (4 x 2GB)

Sorry but you can only use 2GB DIMM's times 4 equals a total of 8GB.

HP Pro 3000 Microtower business PC Product Specifications:

https://support.hp.com/us-en/product/hp-pro-3000-microtower-pc/4047650/document/c01926425

REO

[The_little_guy]

recently i want to upgrade my desktop by adding some more rams on it.Last time I bought the wrong rams(ddr3 4gb for two)which someone told me the motherboard can only support 8gb and each dimms support maximium 2gb.Therefore, I bought the new rams! Model: Adata ad3u 1333b2g9-b(ddr3 2gb for two)

After installation,same problem to last timethe desktop seems like to run as normal(the start button lights up and the fans is functioning)However, there is no display after installing those rams.I tried to remove all the original ones to avoid uncompatible between the new rams and the old ones but it does not work.So here is the question:Did I missed something or I just buy the wrong type of rams again?