Yes, that unfortunately means that your RAM has failed. Chances are that it's only one stick, but as RAM needs to be paired, you may end up having to replace two sticks. Where did you get this computer from? Can you please give me the make and model number. Is it still covered by warranty?
If it's not, we'll show you how to statically discharge yourself, open up your PC, then pop out the RAM sticks (they're usually very easy to access and remove). You will have to run the machine with memtest86+ one stick at a time until you find the bad one, as the current results cannot tell us which stick has failed, only that at least one stick has failed. Then you'll move the stick to another slot and try again, just to check it's the stick and not the connector (slot) on the motherboard that's bad.
Finally, we'll help you identify RAM which is compatible with your computer, and then you can put the new stick/sticks in.
How does that sound? Is this something you would be happy to undertake if we talk you through it? It really isn't that hard to replace RAM, you literally just discharge yourself, reach in, press the release catch, pull it out.
But...I'm not the one to talk you through this. I'm a Windows Update specialist, not a hardware expert. You don't want me guessing, you need somebody who actually knows. So, can you please make a new thread in the hardware forum here: Hardware - Sysnative Forums
linking to this thread, and the right people will respond and help.