GDT824, to Bleeping Computer Forums!
It's my hope that we can be of assistance to you, though as you commented, the Topic may be moved to the 'Am I Infected' if needed.
Let's begin with your network. Reboot both the modem & router by first removing the input cable (if cable Internet) from the modem, unplug the power & allow to sit for a minute. Then remove the power from your router & while it's sitting, screw the data cable back in first, then the power cord. You may also plug your router back in, this should 'flush' the lines & hopefully will have faster Internet as a result.
Now, let's see if any portable security will run on the computer. Download Emsisoft Emergency Kit from here at Bleeping Computer, there'll be a file to extract, would be great to have a USB drive with enough space (1GB minimum) to extract this to & allow for future expansion/quarantine, have to create a folder first, name it 'EEK' so that you'll remember. If by chance one isn't available, it's OK to extract this file in a created folder in your Documents, just as with the USB stick, name it 'EEK'.
Now you can test to see how infected you may be (if the modem/router fix above didn't get things going), normally if one's badly infected, oftentimes no scanner will run unless renamed. That's beyond the scope of a Windows 8.1 Topic & would need to be addressed in 'Am I Infected', I'm not going that deep here. Yet you can first try a Malware scan with EEK, click onto the icon that should say 'USB stick Starter' (or similar wording), the icon will look like that on the page I linked above, to the left of 'Download Now', which starts the interface.
If you've made it this far, look in the screenshots & click 'Update Now', once done, the app may need to be restarted, you'll be notified, if successful update, then run a Malware Scan, which should take a few minutes max, unless a lot of infections/PUP's are found & will be quarantined (reboot may be required). Regardless of result, then run the Custom Scan, which scans every file on the computer, if not running a SSD, this will be slow, and can allow to run before going to bed, work, or running errands (no need to be in a hurry), any Threats are automatically selected for Quarantine and this will be applied as soon as you choose action, again, a mandatory reboot will likely be required.
I am also afraid I may be infected with a virus of some kind or uninvited guest user that may be messing with PC, router or network, so I don't know which problem and forum I should have posted to first. If not here, let me know or please move this new posting to where it does belongs.
If the above doesn't get you disinfected, or refuses to run, then the Topic will be moved to 'Am I Infected' by a Moderator. You may always feel free to contact one, on the main page, it shows who is logged in and membership level by color. Moderators are in bold Blue print. Though let's hope we can get you going w/out that extreme, as it may require a few days in line, and you must be able to precisely follow instruction. Just letting you know upfront.
Resetting the modem as described above will fix that, sometimes routers needs a factory reset, refer to your manual, there's a Reset switch that one has to use a pointed object while powered in to restore to out of the box condition. Then you need to go in there & disable Remote Administration & UP&P, as well as rename the network & change all passwords to those that only you'll know, and never share this information. Make passwords strong, using a mixture of upper/lower case letters, some numbers, and at least 2-3 of these keys in between (~!@#$%^&*_+=`?<>). This includes your wireless password, which should be different from the above.
If you don't take charge of your own security, the same thing will happen over & over again. It begins with network control & ends with the user.
I do know that my BITS service is never running.
In that case, in the Charms Bar, type in Services & then when it shows, click onto it. BITS is an acronym for Background Intelligent Transfer Service, needed not only for Windows Update, also some other features of Windows. If the Service is not running, then there's an option at the left to Start the Service, and at the bottom, select Automatic (Delayed Start) & then Apply & OK. As long as there's no underlying issues preventing the Service from starting, BITS should now be up & running.
Assuming you can start BITS (and no infections), if Emsisoft Emergency Kit finds any (or even if not), then I suggest that you download & install Malwarebytes, which offers a 14 no-cost Trial of the Premium edition, be sure to accept the offer. You want the latest version (3.0.6). Be sure in the Settings that rootkit detection is enabled, and when prompted, run the initial Threat Scan (will show as 'Fix Now').
Last thing, and this came up with another member, you may need to run one or more tools from Microsoft that could take several hours each to run, no matter whether a SSD or HDD is installed. It'll look as though it's hanging, don't worry, when ready, another small window will open to install the hotfix. Be sure that in your Power Plan, during all of these actions, the computer is not allowed to go to Sleep. Go to the Charms bar, type in Control Panel & then type in the box, Power Options. The reason why I'm having you do it this way, is for you to have the option of pinning the Control Panel to the Taskbar, just right click on the icon while there & select 'Pin to Taskbar'. Now it's easier to access these functions.
Now that we're into Power Options, you can stay with Balanced if desired, just choose under Sleep from the drop down list, 'Never' & then Apply. This way, these tests won't be interrupted.
Here's the instructions for fixing update issues, note that it also covers the Sleep issue above, that is unless enabling BITS & rebooting the computer begins to auto download updates, be sure that Windows Update is set to Automatic after enabling BITS.
Hopefully running Windows Update for a few hours (or less if needed) will get the updating process rolling. If not, work your way down the steps. I've never had to use Option #4, so cannot comment on how well that works (or doesn't), looks to be having a lot of updates already on optical media or USB stick & ready to use on one or more computers. Probably would be good for a technician that services computers for a living or hobby (may consider building one of these myself), as long as the one using it makes sure that any underlying issues are fixed. Though am certain that with some, these would have to be, or updates will fail.
That's it for now, if you have any further questions, be sure to post. I'm a night owl & therefore may not be posting in your time zone, hopefully others will chime in as needed, and it's our hope that we don't need to send you to the 'Am I Infected' section, though we all do what has to be done.
BTW, that's a killer notebook you have there (as long as it's configured as shown), has a massive quad core i7 (4th gen), and it's PassMark score is impressive for a mobile.
This may also be a case of a 'botched' Windows 8.1 upgrade, after seeing the notebook shipped with Windows 8. We'll soon see if this is the case or not. The good thing being, you can download new media & refresh the device w/out losing any of your work, just would have to reinstall any 3rd party software. A Reset is more destructive, wipes your drive (other than the Recovery Partition) & loads a clean install of Windows 8.1, in which case you'll need to save anything of importance to some type of external media, make sure that if you have paid for software keys, that these are available. A Reset is basically a clean install, of which the latter is faster if push comes to shove, though in the case of infection, the Reset more securely erases the drive than the quick format that the clean install performs.
And don't forget the networking details above, prevention is a lot better than cure when it comes to hijacked networks. Never share your keys, if your router has Guest Access, use that, and change the password when any connected user leaves.
It's time to roll & get that Toshiba back to mint condition on the software level, is more powerful that my best notebook by over 1,000 points (as measured by PassMark).
Edited by cat1092, 28 February 2017 - 05:27 AM.