【1】***** Attn: Please DO study the Manual PDF Extra Tech Tips and Precaution PDF BEFORE the use, on the listing page, scroll down to after the "Product Information" table the "Product guides and documents" section, the "User Guide (PDF)" so to use this RAM kit to get accurate results. Besides, please DO NOT discard the ITEM PACKING Included Paper Manual Note Printout since that also contains the complete Instruction folder info!!! ***** 【2】There are 3 stages for PC to work (1) Powers On (2) Show POST screen (3) Boot to Windows OS. - The PC could be powered ON ok but the screen remains blank, no POST display / blue screen BSOD / freezes / distorted audios ...etc. ***【Better Tools Make Good Work】*** - One of the nice most convenient tool kit for quick Desktop PC and Server computer DDR4 memory RAM troubleshooting. Easy to use, nice professional tools yet need no professional skills. A lot of professional designs and hardworks done in building this professional tools and make it simple and easy to use. Technology make it simple for us ! 【3】***** Why on a known "bad" RAM and all lights still lit up? ***** Please download the listing " Product guides and documents" section the "User Guide(PDF)" to see the description 'point 4' which explains the DDR4 NonECC (standard PC) RAM and the DDR4 ECC (server) RAM. *** unbuffered NonECC (standard PC) RAM will not work on buffered/registered ECC Server motherboards even though the NonECC RAM test passed. *** 【4】***** Please also see the listing page the Video instruction playback at 6:46s when some lights not lit up indicating there was short / open circuit on the actual bad DDR4 memory module. Multi-layers quality materials made, professional precisely crafted, sturdy and durable. Free life time supports from 29 years IT professional. 【5】Great and Essential for PC owners, Computer technicians, Computer class students, PC parts traders ...etc. to help saving a lot of time and gain effectiveness in computer troubleshooting and repairs, from the learnings to the works. Get this easy to use yet professional tool kit to help our PC repair needs today ! Our desktop computers at home or in the office time after time could have gone faulty and not showing any POST display, blue screens of death or freezes problem.

These problems most of time could be caused by the system memory components.

Simply checking on the Memory Modules / RAM sticks is not enough.
So after swapping with the known good RAMs, there still could be the same problem.
Actually, we also need to check on the motherboard RAM slots as well.

In order to get the PC memory issues quick troubleshooted, we need the nice right set of the hardware test kit to help us out.

Here is one of the easiest and the best to use desktop computer DDR4 memory RAM tester card kit we need to quick check the computer memory.

This new nice desktop PC DDR4 memory RAM tester kit consists of

1.Desktop PC DDR4 RAM Slot tester
1.Desktop PC DDR4 RAM Module tester
1.Antistatic wrist strap

Please take note that the school paper rubber eraser and the piece of the DDR4 4GB memory module / RAM stick as seen in the pictures are not included, they are just for demonstration purpose.

Must have for the PC owners, office / internet shop computer admins, computer technicians, computer parts traders, the computer class students and school computer lab admins …etc.

Welcome to contact seller on Amazon Message email if have any question or needs help.