Windows 7 Key Microsoft Windows XP, antivirus tech

As all of us know, Windows XP SP2 adds a brand new protection feature - DEP (Date Execution Prevention Data Execution Safety), you'll be able to defend your pc from viruses damage. According to Microsoft's DEP technologies, Intel and AMD have created a corresponding anti-virus CPU.


DEP

principle of anti-virus program should you upgrade to SP2, SP2's DEP function enabled to prevent virus damage, since the DEP to keep track of the numerous methods to quit the virus within the safeguarded memory place to operate dangerous code. DEP by way of the processor's NX (No eXecute) feature, look for the memory not explicitly includes executable code inside the information (these information are commonly the source code of the virus), uncover the data, NX them are marked as . If right after a program in memory, attempting to implement these with So if you ever operate a software program that has been subjected, DEP will probably be the virus code is marked as

If you want to offer complete perform to DEP's safety, additionally to outside should really upgrade to SP2, your CPU ought to also help the DEP technology. At present typical 32-bit processor (for example P4 Northwood, and so forth.) don't assistance NX, to support the technology, the primary CPU 64-bit AMD processor (Athlon 64, AMD Opteron), and Intel's Itanium CPU, J Series P4 Prescott, is said to nVIDIA, Through, Transmeta and other companies also strategy to add the NX in its chip technologies, but the pace of those organizations updates NX too sluggish, consider a while prior to the official launch.

approach to allow or disable DEP

By default, SP2 necessary Windows applications and companies only to allow the DEP. But it is possible to also set up their own, so that all applications about the personal computer enabled DEP, so that you can stop the virus. Additionally to Acrobat Reader5.0

example, the make all of the programs and services are enabled DEP, approach of operation is: Account login with administrator privileges SP2, and then click Double-click Allow DEP .

If you would like to a program (such as Acrobat Reader 5.0) to disable DEP, you may click on the previously mentioned Right after the plan is quite vulnerable to assault, the virus can sneak in to the program, after which unfold to other programs to the pc and contacts in Outlook, and destroy your personal files. DEP is enabled, if any, soon after the plan cannot perform effectively, you are able to obtain the software program vendor DEP-compatible model of the program, if no these kinds of edition would be to disable DEP.


to support DEP, P4 Prescott

utilization of technology consistent with EDB Microsoft's DEP feature, Intel for their CPU developed technology. Currently Intel P4 Prescott (mPGA478 with LGA775 deal) or for the C0 core stepping D0, the newest J Sequence P4 Prescott core with E0 stepping. Only J Sequence P4 Prescott with anti-virus operate, only it really help EDB technology to fulfill the SP2's DEP antivirus characteristic that makes it possible for for buffer overflow (buffer overrun) Vulnerability in the style from the virus fail to prevent their replication and spread to other programs .

In case you use a P4 Prescott / Celeron D (C0 stepping core) processors, upgraded to SP2, you may acquire a deadlock in the Windows XP running program, startup display, but do not put on P4 Northwood may have this challenge. This is considering that SP2 can open P4 Prescott (C0 stepping core) contains the EDB features, but this kind of CPU and the execution is not EDB,Windows 7 Key, EDB component of its internal power transistor won't operate, and thus trigger the system to die lock.

To resolve this challenge, Microsoft has launched inside the September 14 amendment towards the relevant documents, we are able to go to Microsoft's official web site to download. English edition of Windows XP customers to download handle is simplified Chinese model of XP users to obtain address

to assistance DEP, AMD 64-bit CPU employing EVP tactics

AMD 64-bit processors the very first to help Microsoft's DEP technology. So that you can meet the DEP, AMD and Microsoft to style analysis and development of AMD's new chips feature AMD 64-bit processors (which includes the Athlon 64/Athlon 64 FX / Athlon 64 cellular model / Sempron cellular edition, and so forth.) will have the EVP. EVP and SP2's DEP characteristic technical cooperation, to avoid

But, AMD 64-bit processors inside the machine soon after setting up SP2, as long as your computer begins, the DEP function, and configure the needed driver files named Mpegport.sys hardware, when you utilize the Sigma Design Business Realmagic Hollywood Plus DVD decoder software program will conflict with the DEP. This can be given that older drivers are some comparable operation with the virus, so SP2 to blunder it for the virus, which bring about the DEP, trigger the laptop or computer to repeatedly restart. To resolve this issue, Microsoft recommends that consumers update the older driver, or disable decoding software for that DEP, turn off the SP2 virus safety.