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I believe I have a virus or worm that Norton cannot detect

My computer keeps telling me that my c drive is critically low on space hours after removing files to free up enough space

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Ok. How much space do you have free on your hard-drive right now? (I'm assuming that you know how to check this).

If its low, then maybe you didnt free up enough space on the drive. If it is high however, then answer this: is the message you are receiving telling you that you are low on disk space? or is it telling you that it is low on virtual memory space?

if its low on virtual memory, then the problem could be many including 1) virus etc 2) a program is running that is using up more RAM than is avaivable 3) you need more RAM on your system.

if its low disk space, then the problem could be 1) You need to free up more disk space (that may mean getting a bigger hard-drive installed)

Try using an updated virus scanning utility. If it says that you are virus free, then try one of the solutions above.

Posted on Oct 02, 2009

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1 Answer

Low disk space


This couldn't be due to a malfunctioning fan, or any other hardware problem, it certainly sounds like a virus but it's hard to know. I advise using this guide t try and remove any viruses or malware.

Oct 21, 2012 | Compaq CQ2103WM-B (884962083048) 17 in. PC...

Tip

How Norton Anti-virus software work


<p>First you have to install any one anti-virus software and make it ready with online update, and then scan your computer with that anti-virus software. Reliable anti-virus software features a scanner equipped with the technology required to detect and eradicate viruses, worms and other members of the malware family.<br /> <p> <br> <p>Viruses have many strategies to infect your computer, like avoiding detection from protection software. To prevent these virus strategies and protect your computer anti-virus software also has some methods, like Norton anti-virus use Signature base and Heuristics-base detection. Signature based detection includes searching for knowing structure within executable code, however your computer can be infected with most new virus which signature is not known. In that case heuristics method can be used. It can identify new viruses by variation of such code, in files.<br> <p> <br> <p>Norton anti-virus has many other features, which it upgrades from version to version, like Sonar protection. SONAR examines the behaviour of applications to decide whether they are malicious. Various things are checked such as if the program create a desktop shortcut or create add/remove programs entry before determining the program is malicious. Another feature is Norton insight. It is a program that comes with the Norton 360. It improves the speed and quality of computer scan. It identifies well known files of client machine and excludes them from constant monitoring and scanning. It only scans unknown and unsecured files. Skipping the already known files helps the scan more impact. Symantec antivirus can interaction with rogue software, actually these type of software are nothing but a misleading program, it always rebranded and cloned of its previous version.<br> <p> <br> <p>Many other anti-viruses have features like anti-virus, anti-malware, anti-spyware which is used to detect and remove viruses from your computer, whenever you scan your pc with this anti-virus software.

on Mar 13, 2011 | Computers & Internet

1 Answer

I have a Compaq CQ2103WM computer running Windows XP, it currently has 0 bytes of disk space. What could be causing low disk space after running disk cleaner, Ccleaner, deleting most software, programs...


You need to do a chkdsk on this and see what comes up with that. This will check all of the partitions. It may be that the drive is bad. On start up you can hit f10 and perform a disc scan as well.

Oct 07, 2012 | Compaq Computers & Internet

1 Answer

WHAT SHOULD I DO.... MY COMPUTER DETECTED A 136 OF VIRUS.... BUT MY ANTIVIRUS DIDN'T WORK TO DELETE ALL OF THAT WAS TROJAN VIRUSES TROJAN PSW,TROJANSPY, TROJAN IM, PACKED.WIN32, VIRUS.BAT.GRAY...


  • if you cannot delete, then just quarantine. but if you scan again but still there are several viruses detected, you may have a replicating worm on your PC
  • replace norton, try kaspersky anti-virus or bit defender

Oct 02, 2010 | Norton AntiVirus 2004 (0003764823191)

2 Answers

Laptop infected with worm? Help


No virus checker catches them all, and frankly, Norton 360 is pretty weak. Try running AVG, which is downloadable and free.

Dec 28, 2009 | HP Compaq Presario v3000z Notebook

2 Answers

When my computer is started a message "cannot find khatra.exe" is coming how to get rid of it. I have installed avg antivirus. I am not able to find where it is in system32.


Good day.

It's a worm infection often contracted through file sharing. I suggest you use the free versions of these two tools and let them remove anything they find.
http://www.superantispyware.com/supe...freevspro.html
http://www.malwarebytes.org/mbam.php

Once clean make sure that your machine is totally up to date with both critical and non-critical updates from Microsoft.

Your respose is highly appreciated.

Regards,
Arjun

Jun 13, 2009 | Symantec Norton Antivirus 2009 1-User -...

1 Answer

Virus


i suggest kaspersky internet security for you, it can deal with both viruses and spywares. because i think you have a spyware in your computer not a virus.

Oct 04, 2008 | Computers & Internet

1 Answer

Restting a desktop due to virus or worm


get rid of Macafee, it wont help

restore to the earliest point you can, will minimize the spread of the virus then

use an online scanner like http://www.pandasoftware.com/ActiveScan/
and install
AVG free http://free.grisoft.com
Avast free http://www.avast.com or
FProt
or another av system that works,
Macafee and Norton are definitely counterindicated

system restore should be reset to the maximum disk space allowable, the tweaks espoused by many, of reducing disk space for system restore causes problems like this.
resetting the restore size will not magically replace missing system restore points, they are gone, but will give you more days worth of repair time in future, it will happen again.

my 2c worth

Jul 03, 2008 | Gateway 310S (2900621) PC Desktop

3 Answers

Norton failed to detect worm.win32.netsky. My computer is infected with the virus and I need help. Patti


Hello Patti,

First, you need to update the Norton with the latest virus definitions and perform a scan again. It may detect the virus and remove it.

If it does not, we need to format the hard drive of the computer and reinstall the operating system as it is the most effective way to get rid of the virus.

Wish you good luck

Pat

Mar 11, 2008 | Computers & Internet

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