it is not required but it is recommended if you want to keep your laptop safe and keep viruses away.
Personal computer
This depends on the damage that has been done to the computer already. Any good antivirus should be able to remove them. I recommend Kaspersky. The total cost could be all the data on your computer, any personal information on your computer including bank account numbers and other targets of identity theft. Be careful though of antivirus scams. There are many "false reports" of viruses, or virus hoaxes, that tell you to delete a file from your computer, but in fact they are simply strangely named system files that are either required for the system to run, or are needed by important programs such as your computer's built in firewall software. Any reputable Antivirus program will not delete these files, so your best bet is simply to purchase a good antivirus.
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For an antivirus to be effective then it needs to be able to find tracking cookies and have high heuristics levels. if you want an antivirus to find DEEP INFECTIONS then consider an antirookit.
Mcods.exe is a process belonging to McAfee VirusScan which protects your computer against Internet-bound threats such as spyware and trojans which can be distributed through e-mail or attack directly to the computer allowing unauthorized access to your computer. It is required for the proper operation of the antivirus programme so it should not be deleted.
Yes it does
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Most personal GPS systems come with software to download to your computer. You may also be able to track them online.
Ativirus not required for java based phones.
For data mirroring, it will require a personal computer with a DVD slot and a data mirroring slot. Also, it is required to buy Microsoft Office, Excel, and Word.
Manually, and with a great deal of time required. There are tools offered free on various commercial anti-virus sites which will target one specific virus, but these are not released for every virus and are very time consuming to use. I'd recommend getting a free antivirus if you are worrying about cost such as AVG Free, which will sort your system for you.
The RAM is where the computer stores all the required codes to run it.