Windows 10: Windows 8.1 64 DEFENDER TURNS OFF DURING SCAN ! shut shuts turning turned

Windows 8.1 64
16 GB RAM (2 sticks vengeance ddr3)
Intel i7-4790K (Not overclocked and won't be)
Motherboard GIGABYTE Z97-HD3 LGA 1150 rev 2.0
GeForce GTX 1050ti not overclocked
PSU: EVGA supernova 650 Watt G2 80 plus Gold. I'd love to smash this computer over someone's head but the computer is too imporatant to me.


Starting last night, towards end of a scan it turned itself off and goes to all red borders. While tinkering with things today I am using Quick scan to test and Defender turns off towards the end of a quick scan in about 30 seconds. If I do full scan today (which normally takes about 30 mins) it turns Off in about 30 seconds.


I click Turn Defender back On and it takes about 30 seconds and does turn back on but repeats problem when I scan.


I have spybot and defender installed. never had an issue with them for years.


About 8 weeks ago I downloaded malwarebytes first time ever. Scans showed no threats and I recently uninstalled it about a week ago. I uninstalled it in control panel and it said sucessful. The problem I'm facing usually indicates conflict of multiple AV progs but I uninstalled malwarebytes fully in control panel.


In Action Center, my security tab = Defender IS On, some mention it might not be selected On after using other AV progs but it is.

I ran sfc /scannow. See black image.

I reinstalled malwarebytes just today in order to re-uninstall it. I ran a scan first which was clean, and then uninstalled it but still problem.

I defragged SSD drive but no help.

I ran Disk Cleanup in control panel Administrative tools. See pictures. I don't know if selecting and deleting those will fix or worsen computer.


I de-selected in Defender to Scan Archive files but it doesn't fix.
"...MSE is having problems with large compressed/zipped archive files due to the fact that MSE needs to open these in memory to scan them..."
https://answers.microsoft.com/en-us...g-a-full/c9d05261-954d-4f37-8478-2158d3c11c4c

I think there IS something wrong with the RAM/Memory because I have a separate problem where the PC has been giving bluescreen every 2 months or so with error codes that suggests RAM problem. And also not waking from sleep happens quite often: still unsolved: very much willing to just buy new memory if that's the likely the cause:
https://forums.tomshardware.com/threads/ram-changed-slots-fixed-reboot-loop-but.3429712/


I did this:
In Run dialog box, type 'services.msc' and hit enter. In Services, search for 'Security Center'. Right click on 'Security Center' and click on 'Restart'.
And I also restarted the PC before trying to scan again but it didn't fix it.

I'm ready to snap.


[Imgur](https://i.imgur.com/MIe10oY.jpg)

:)

 

Turning on/shutting down issue

Hello,
I cannot turn on my PC at all until I unplug something, like when I try to turn it on it doesn't work, I unplug the Display port then I turn it on and after it turns on I replug it.
I also have problems with shutting down, I sit the pc down from Windows and it shows me the "shutting down" thing and then it suddenly shuts off like it's been unplugged from the wall.
I have my AC, phone, monitor, router and PC.
And I'm using some extensions and adapters because the wall plug is pretty far.
By the way I replaced my Mobo CPU, ram and GPU because the previous build had other problems.
System Builder - Core i7-7700K 4.2 GHz Quad-Core, GeForce GTX 1070 8 GB FTW DT GAMING ACX 3.0, S340 (White) ATX Mid Tower - PCPartPicker
Thanks in advance.

 

PC turns on for a split second then shuts off

When I hit the power button my rig turns on then shuts off less than a second later. All my fans spin then it shuts off then tries to turn on again but does the same thing. Im thinking its my psu but I dont want to jump to anything yet.

 

Computer is shutting down immediately after turning it on?

This has started to happen recently and I'm worried. It does not happen always but this week it happened more often. Basically when I am turning my computer on, after a beep it's shutting down. With the second time it turns on and it does not list that my computer shut down suddenly, so to get me into safe mode, etc. but it boots normally.

I am not sure what the problem is. I removed an additional small fan I had, since I always had it there in the usb, so I thought it could be causing it, but I removed it. I decided to replace my power adapter, since other times I had problem with that & usually they are heating a lot. I bought a cheaper adapter & still the same. I also noticed that this problem usually happens when I turn on my computer after hours. I tried to turn on/turn off my computer between minutes and it did not happen.

Could it be dust? The CPU? I just hope there isn't any problem with the motherboard.