If I look into windows firewall that has diabled but am I to assume that McAfee has done this to prevent confliction as McAfee provides a firewall to?
Yes. Using more than one software firewall on a single computer is not advisable
Using two firewalls could cause issues with connectivity to the Internet or other unexpected behavior. Further, running multiple software firewalls can cause conflicts
that are hard to identify and troubleshoot. Only one of the firewalls can receive the packets over the network and process them. Sometimes you may even have a conflict that causes neither firewall to protect your connection. However, you can use a hardware firewall
) and a software firewall
(i.e. Kerio, ZoneAlarm, Comodo, etc) in conjunction.
You also may want to read Understanding and Using Firewalls
I am still concerned that I may have a virus or something (me messing up) as my computor is even slower than when it had a virus and keeps freezing/ timing out and goes to a blank screen but I am also aware that McAfee may be the cause of this.
Although McAfee is as good as any other well known anti-virus program, it requires numerous services and running processes that consume a lot of system resources and often results in complaints of high CPU usage. If you do a Google Search
you will find there have been numerous complaints about it affecting system performance. Those issues plus the cost factor are the primary reason many folks look for a free alternative as a replacement. I would go back to avast or switch to Avira AntiVir Personal - Free Antivirus
or Microsoft Security Essentials
. You can also get a second opinion by performing an Online Virus Scan
When connected to the internet it uses the defauted yahoo search engine.
Also I have a question about what happens when you quarantine/ delete a virus? What happens to the file/location it is found in? Does it delete/ quarantine the whole file/ location so it can not be used anymore?
When an anti-virus or security program quarantines
a file and moves it into a virus vault (chest) or a dedicated Quarantine folder, that file is safely held there and no longer a threat
. The file is essentially disabled and prevented from causing any harm to your system through security routines which may copy, rename, encrypt and password protect the file before moving. Quarantine is just an added safety measure
which allows you to view and investigate the files while keeping them from harming your computer.
One reason for doing this is to prevent deletion of a legitimate file file that may have been flagged as a "false positive
" especially if the scanner uses heuristic analysis
technology. Heuristics is the ability of a scanning program to detect possible new variants of malware
before the vendor can get samples and update the program's definitions for detection. Heuristics uses non-specific detection methods to find new or unknown malware which allows the anti-virus to detect and stop if before doing any harm to your system. The disadvantage to using heuristics is that it is not as reliable as signature-based detection (blacklisting) and can potentially increase the chances that a non-malicious program is flagged as suspicious or infected. If that is the case, then you can restore the file and add it to the exclusion or ignore list. When the quarantined file is known to be malicious
, you can delete
it at any time by launching the program which removed it, going to the Quarantine tab, and choosing the option to delete.
I ask this because somehow things have been deleted, like I try and download and update something and when I install I get a message saying win 32 application not found...
More information is needed. What are you trying to download and update?
and a lot of audio codes that were installed are now gone (I have picture but no sound on videos). I did run ccleaner but have restored my computor back to before I did this incase it was this that deleted the codes!
removes unused, temporary and junk files from your system to include temporary Internet Files, Cookies, History, etc. It should not have removed audio codecs and you may need to reinstall them.
is safe and useful for removing temporary and junk files, I do not recommend using the built-in registry cleaner unless you have a good understanding of the registry
. In fact, I don't recommend using registry cleaners/optimizers for several reasons:
Registry cleaners are extremely powerful applications that can damage the registry by using aggressive cleaning routines and cause your computer to become unbootable
The Windows registry
is a central repository (database) for storing configuration data, user settings and machine-dependent settings, and options for the operating system. It contains information and settings for all hardware, software, users, and preferences. Whenever a user makes changes to settings, file associations, system policies, or installed software, the changes are reflected and stored in this repository. The registry is a crucial component
because it is where Windows "remembers
" all this information, how it works together, how Windows boots the system and what files it uses when it does. The registry is also a vulnerable subsystem, in that relatively small changes done incorrectly can render the system inoperable
. For a more detailed explanation, read Understanding The Registry
Not all registry cleaners are created equal
. There are a number of them available but they do not all work entirely the same way. Each vendor uses different criteria as to what constitutes a "bad entry
". One cleaner may find entries on your system that will not cause problems when removed, another may not find the same entries, and still another may want to remove entries required for a program to work.
Not all registry cleaners create a backup of the registry before making changes
. If the changes prevent the system from booting up, then there is no backup available to restore it in order to regain functionality. A backup of the registry is essential BEFORE
making any changes to the registry.
Improperly removing registry entries can hamper malware disinfection
and make the removal process more difficult if your computer becomes infected. For example, removing malware related registry entries before the infection is properly identified can contribute to system instability and even make the malware undetectable
to removal tools.
The usefulness of cleaning the registry is highly overrated and can be dangerous
. In most cases, using a cleaner to remove obsolete, invalid, and erroneous entries does not affect system performance but it can result in "unpredictable results
Unless you have a particular problem that requires a registry edit to correct it, I would suggest you leave the registry alone. Using registry cleaning tools unnecessarily
could lead to disastrous effects on your operating system such as preventing it from ever starting again. For routine use, the benefits to your computer are negligible while the potential risks are great