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Windows 7: Sick PC Maybe Got a Virus, or ...?

21 Nov 2016   #1

Windows 7 Ultimate x64
Sick PC Maybe Got a Virus, or ...?

Running Win7 x64

Yesterday morning my galfriend's PC broke.
It had run fine the day before.
After booting, it froze.
No desktop icons would start any apps, WinExp not responding, just the busy processing whirlygig.
It seemed to run sluggishly.
Finally, WinExp crashes after wrastling with it for a while.
It would start up in Safe Mode and run faster with the Safe Mode limitations.

I was able to do a System Restore to a point a week before from a WinUpdate.
It ran great out of the gate.
But the problems came back after a second reboot.

I ran an AVG Free scan.
It found: Print_Screen_Boot that it labled as a virus affecting MsMpEng.exe.
I cannot find MsMpEng.exe in a search of "C" drive.
There are a few MsMpxxx.dll files.
I was a bit leery about it being a false positive as we do get more of those than actual malware on AVG scans.

I ran a "House Call" Scan.
It ran all day.
It froze up while scanning the Malwarebytes folder.
Tried it in Safe Mode, it ran much quicker and completely, but nothing found.

Found an Acronis image that I had forgotten I had made just after the WinUpdate.
Did a Parted Magic Secure Erase of the SSD, installed a new Win7 to setup the partitons,
and finally installed the Acronis OS image over the new Win7.
No satisfaction.

Her PC ran fine for the week after the SysRes and OS image were made.
SysRes was from before the Winupdates.
The image was from after the Winupdates.

Ran AVG again a few times.
It froze during the scan every time.

I've run Kapersky's TDSSKiller, and Windows Defender Offline.
No satisfaction.

Device Manager shows no problems.

I'm running out of ideas for dealing with this.
I'm beginning to think a clean install of Win7x64 and all the apps is my only option left.

Any suggestions?

My System SpecsSystem Spec
22 Nov 2016   #2

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Hello mate look first get rid of the AVG it is rubbish if you can run these
SFC /SCANNOW Command - System File Checker
Disk Check < if necessary include the /f and /r in the command line as per Option2

NB SFC best run for about three runs
SUPERAntiSpyware | Remove Malware | Remove Spyware - AntiMalware, AntiSpyware, AntiAdware!
Malwarebytes | Malwarebytes Anti-Malware Premium
AdwCleaner Download
ADW download from bleeping computer delete any rubbish found with the malware scans
(NB If one is running Kaspersky security it may rant about ADW - just ignore it or disable Kaspersky while the ADW is being used)
The MBAM and SAS can be run from a stick and if still you have a problem then try this it runs in a non Windows enviroment which means Windows has no control over the scan. You will need to make a bootable disk or stick - I prefer a disk but the choice is yours.

Just a by the by the best method (I think is) is the DISKPART clean or clean all for doing the cleaning of a drive Disk - Clean and Clean All with Diskpart Command

Another method I sue is the disk wipe (writes zeros' to the drive) via Partition Wizard see pic
Disk - Clean and Clean All with Diskpart Command (also a very handy tool to keep) and I ama ssuming you have your data backed up eh?

Attached Thumbnails
Sick PC Maybe Got a Virus, or ...?-mini-tool-wipe.png  
My System SpecsSystem Spec
22 Nov 2016   #3

Windows 7 Ultimate x64

Thanks for your response ICIT2LOL.

I have done an SFC several times already, but intermittently.
From your post I gathered you recommend it to be done 3X back to back.
OK, I've done that.
Nothing found.

Malwarebytes is on her PC and has been run a number of times.
Everything found by it has long been removed.
SAS is new to me.
It looks to be a pretty decent malware tool.
I ran it.
But, nothing that looked to be important was found.

ADW as well as Ccleaner were put on her PC and run several times, but were removed during the SysRes and Image restore operations.
I've put them both back on and run them again.
Nothing found worth worrying about other than almost 1500 tracking cookies.
That makes my skin crawl, but doesn't bother her.

I am open to argument, but after checking around fairly extensively, I'm convinced that the Secure Erase utility is a better way to deal with cleaning and restoring SSDs than Diskpart. In the end the same result is achieved which ever you use.

I am leery of using anything that overwrites simply to clear data on an SSD.
Again, as I understand it, after the Secure Erase operation, it would be nothing more than redundant to do so, and could potentially interfere with TRIM and garbage collection operations.

Right now it seems to be working OK.
But, that's not new.
Let it run, be used and rebooted a time or two.
Then, we'll see.
I'll turn the PC back over to her in the morning to give it a go.

Thanks again.
My System SpecsSystem Spec

22 Nov 2016   #4

Windows 7 Ultimate x64

The problems are still there, no improvement.
WE crashes, everything freezes up, and it still needs to be hard reset to get it shut down.
I'm getting tired of playing with this.

I'm now getting the feeling that this may be something other than malware, or similar.
The wipe of the drive and reinstall of the image should have taken care of the problems, if that was the source, unless it is something very exotic.

I am having a few problems with my PC also. Although they're just PIA types of things, nothing as severe as what's going on with hers. I have been thinking about rebuilding my OS, but reinstalling OS images has fixed the problems for a while.

I built both PCs almost 4 years ago, just before leaving Alaska ans moving to Hawai'i, same MoBo, mine with an i7 CPU, hers with an i5, and everything else more suited to our personal uses. I've heard a lot of complaints about computers and other electronics having short lifespans due to the high humidity around here. I've never paid much attention to that. But, I'm beginning to wonder now.

Unless something brings relief to this soon, I'll try a clean install. If that doesn't fix the problem. Then, I'm thinking the only thing left is to start over with a new MoBo and CPU.

Any thoughts, anyone?

I am going to try a non destructive rebuild of Win7. I can't use my install disk because of SP1 being installed. I cannot remove SP1 because right click doesn't work. So, I'm downloading a Win7 + SP1 ISO to burn an updated install disk from. I'll report back how it goes and if it works.
My System SpecsSystem Spec
22 Nov 2016   #5

Windows 7 Ultimate x64

I think I've got it!!!
I am working from her PC right now.
Before the rebuild, I could not have been able to do this.

After finishing the rebuild, I'm getting several notices that some of the original MoBo apps and drivers are not working.
I need to go back and reinstall them.
That may be the source of the problems with both PCs, MoBo apps and drivers may be corrupt or something similar.

If I'm wrong I'll be back.
Thanks for the help.
My System SpecsSystem Spec
25 Nov 2016   #6

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Ok sorry late reply mate now the DISKPART stuff it actually writes zeros to the entire disk it unless I have it terribly wrong it is not just overwriting the disk. The same goes with the Partition Wizard wipe function.

Now if you want you can if you have the activation code for Windows download the ISO from Heidoc it will have SP1 and most of the to date updates already fixed so no more heaps of them because the ISO is "freshened" every now and then. You just then need to make a bootable disk or stick (I prefer a disk) and install from it and just use the code as previously mentioned. I have done this quite a few times now an it is quicker than using old media. Just make sure you get the right version of Windows from Heidoc. The Technology Treasure Chest Doing it this way may solve the problem with the right click issue.

The driver I am assuming you know already best got from the board manufacturers site as one comes across a few that use aftermarket driver softwares.
Personally I always keep drivers on a stick after I have downloaded them so they are easily accessed doing an install.
My System SpecsSystem Spec

 Sick PC Maybe Got a Virus, or ...?

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