Problem with physical memeory usage going from 1.8GB to 7GB after computer sits idle

[Txracer16]

I have started having a problem with the physical memory usage going from around 1.8GB to around 7GB after the PC sits idle for an hour or so.CPU usage is around 12% which is kind of high for my system with nothing going on, usually around 2-3% or lower. Seems to go up gradually till maxes out around 7GB, I have 9GB installed. The only way I can get it to go back to normal is to reboot and all is fine why using the PC but as soon as it goes to sleep the memory usage goes to hell. I found this out the other day when I went to play online and PC froze during play and had to exit the session. Have not really installed anything new other than Corsair VOID wireless headset but this issue did not start immediately after that but week or so. Last thing I did was try running windows update which would not run, was getting service can not run error message. Thinking might be related to this but I have tried disabling windows update in services and no change. When looking in resource monitor does not look like anything running is using abnormal amount of memory. Any ideas? I'm at a loss at this point. Thanks in advance.

 

[Txracer16]

Looks like may have solved the issue. My AV was updated a while back and it looks like the update was corrupt or was interrupted and was causing issues with my installation of NORTON. Did fresh install of NORTON and after sitting overnight the physical memory this morning was 26%, 2.3GB . will check again this afternoon after sitting all day, keeping fingers crossed.