Solved Memory usage slowly climbing without processes running

Brief Summary: I had this problem with windows 7, and figured upgrading to windows 8 would solve the issue (I wanted to upgrade anyway) but it's still happening. I have 8 GB of DDR3 RAM and when I start windows it has about 1.5 GB in use. Just letting it sit there, the memory use slowly climbs and climbs until memory usage says 90%+ and it gets extremely laggy or freezes. It takes less than a day of being on to hit the 90% memory usage. Restarting my PC resets memory usage and the climb begins over again until I have to reset, rinse repeat.

The processes tab shows all processes only using the original 1.5GB and the continuous memory usage comes out of no where. I thought it could be a problem with my RAM so I swapped it out and it's still happening - even running memtest for half a day shows 0 failures. I have tried disabling all services from starting at startup except Microsoft services and it still happens. I have tried setting my page file manually (I set it to minimum AND maximum at 16GB). Still happening.

I have Windows 8.1, Asus Z97 Sabertooth Mark 2 motherboard, Corsair vengeance DDR3 1600MHz 8GB, Asus 970 GTX, Samsung 250GB Evo 850 SSD, WD 2 TB Black HDD. My system is fully up-to-date with updates and all drivers are the newest versions. I have to leave for work right now but will be checking this thread and responding throughout the day if anyone has any advice of what my problem could be, and I will be back to test any advice from you guys when I'm off work tonight. Thank you so much in advance for anyone that replies - this issue has really been bugging me.

Drivers perhaps? Can you post a picture like this of the memory under the performance tab in task manager (when it looks bad). http://www.eightforums.com/tutorials/2598-screenshots-files-upload-post-eight-forums.html

Will do. Since my PC is usually unusable by the time I get home from work I have it shutdown at the moment. It will have to wait until tomorrow but I will upload it as soon as I can.

Various screenshots:

Sorry if they are a bit out of order. I uploaded 3 screenshots for the start of turning on my computer (this is with a second monitor running so the usage is high off the start) and then 3 more screenshots of the same programs running but 3 hours later. I am going to bed so I figured I'd post them now as my computer will have crashed if I leave it on overnight. But the usage just keeps climbing the way it does until it's unusable.

A quick update, PC has been on for only an hour and it's been much faster this time. Here's 3 more screenshots.

1)try to turn off all the antivirus thingy
2)turn off the write caching in Device Manager

Those things consume a lot of RAM. that's my suggestion

Get output from RAMMap in this case - your memory usage doesn't match the screenshots of process usage.

Hope this gives more insight. Let me know if you need certain parts of RAMmap - The order is messed up - The first and last screenshots are taken at startup, and the middle ones are taken from only 1 1/2 hours after startup.

A brief search suggests Bit Defender Free (gzserv.exe) a suspect to the problem.

A few users have had this problem since 2014, but not enough to invest in problem solvers.

Since the Free version can be installed/uninstalled at will (I assume), the problem can be isolated to Bit Defender Free if the problem goes away after the uninstall.

[Solved] Thank you so much for helping everyone, especially 10soonerlater. I didn't think it would be Bit Defender as it didn't seem to use that much memory, but it was certainly the culprit. Uninstalled completely and have been running PC for about 16 hours straight now, doing various things throughout the day after leaving it on overnight, and my memory is fine.