Norton 360 version 5 on windows 7 64bit OS - Crashes on Full or Custom scans - only quick scan works

Norton Security | Norton Internet Security
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My computer is from 2009 so the C drive is 2009.  My C drive is 931 GB with 872 free. 

I have 8 GB RAM with a 3 Ghz processor.

I do have an older internal hard drive I removed from an older computer but it is now only used as an external hard drive. 

I have 2 external hard drives (931 GB with 402 free about 3 years old and 1.81 TB with 1.5 free about 1 year old) and the old (over 5 years old) internal hard drive (231 GB with 78 free) I now use as an external hard drive. 

I backup regularly.  My backup goes to the 1.81 TB external drive. 

How do I run a CHKDSK/f on C:\?  But I may not understand what it tells me when I run it. 

I do not think it is over heating. 

Thanks for your help.

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AiQuoc:

 

As considerable work has been done on your machine without much success, I would suggest saving your personal data, documents, pictures etc. and signing in on one of these free malware removal forums to get assistance.  They use more advanced tools and one on one assistance.

 

www.bleepingcomputer.com

http://www.geekstogo.com/forum/

http://www.cybertechhelp.com/forums/

http://forums.whatthetech.com/

http://support.emsisoft.com/forum/6-help-my-pc-is-infected/