Hello and welcome to the forum.
I am unable to access the Internet.
That is likely to be a serious impediment in troubleshooting to further the diagnostic process.
Do you have or have access to a second working computer that actually has access to the internet.
There are a multitude of scanners that might assist you but you will need to download them onto portable storage in order to use them on the problem machine.
These are the programs I use to generally delouse a computer with virus and or malware issues.
ADWcleaner from here
http://www.bleepingcomputer.com/download/adwcleaner/dl/125/
JRT (Junkware Removal Tool) from here
http://www.bleepingcomputer.com/download/junkware-removal-tool/dl/131/
RogueKiller from here
http://www.bleepingcomputer.com/download/roguekiller/
Norton Power Eraser from here
https://security.symantec.com/nbrt/npe.aspx
Malwarebytes from here
http://www.malwarebytes.org/mwb-download/confirm/
SuperAntiSpyware from here
http://www.superantispyware.com/downloadfile.html?productid=SUPERANTISPYWAREFREE
Ccleaner from here
http://www.piriform.com/ccleaner/download/standard
TFC.exe (Temporary Files Cleaner) from here
http://www.geekstogo.com/forum/files/file/187-tfc-temp-file-cleaner-by-oldtimer/
ESET Online Scanner from here
http://www.eset.com/us/online-scanner/
Eset online scanner is a bit different than the others in that you need to either use
IE or download and run their smart installer if you're using another browser. Then tick
the radio button that says "Enable detection of potentiall unwanted application"
Then click the link that says "Advanced settings", then check all the boxes except the
one that mentions "Use custom proxy settings", unless of course you're using a Proxy
Server. Then just click "Start", it will do a thorough system scan so it takes a long
time.
I don't check the links above everyday, so if you have any problem with any one of them then just Google for the program name but use the site names that I have recommended since I'm relatively certain they are free of extraneous garbage.
I usually start with Ccleaner followed with TFC.....
Then JRT followed by ADWcleaner, then the rest saving Eset Online Scanner till last to bat cleanup.
NOTE: All of the links should provide a page that will allow you to download the free versions of the software, but....
Because of the way the forum software redirects links, some may not work properly and provide the exact page. Most of them do.
The link for eset online scanner may require that you actually, physically type the URL into the address bar of your browser manually in order for it to render the appropriate page.
For instance
Code:
http://www.eset.com/us/online-scanner/
Typed into the URL address bar (not the search engine text box should produce the correct download option.
AND
As a possible last ditch solution
https://support.kaspersky.com/viruses/rescuedisk
Download the ISO and burn it to a CD and use that to boot the system.
It is a very versatile and robust solution, although it doesn't contain every network controller driver, it performs best with an Ethernet (wired) connection, which you will need to use the update tab in the program to upgrade to the latest signatures.
There are a few basic tips on the download page but there is a user guide here
http://media.kaspersky.com/downloads/consumer/kasp10.0_rescuedisk_en.pdf
That explains in more details, how to use the product.