Windows 7 Product Key Microsoft Windows XP, antivi

As we all know, Windows XP SP2 adds a new protection feature - DEP (Date Execution Prevention Information Execution Protection), you could defend your personal computer from viruses harm. Consistent with Microsoft's DEP technology, Intel and AMD have created a corresponding anti-virus CPU.


DEP

principle of anti-virus system should you upgrade to SP2, SP2's DEP characteristic enabled to stop virus damage, simply because the DEP to keep track of the numerous methods to stop the virus in the secured memory place to run harmful code. DEP by means of the processor's NX (No eXecute) feature, look for the memory not explicitly consists of executable code inside the information (these data are sometimes the supply code of the virus), obtain the data, NX them are marked as . If right after a program in memory, trying to apply these with So for those who run a software that has been subjected, DEP will likely be the virus code is marked as

If you want to provide full play to DEP's protection, additionally to outside will need to upgrade to SP2, your CPU should also assistance the DEP technologies. At present frequent 32-bit processor (including P4 Northwood, and so forth.) do not help NX, to assistance the technology, the most important CPU 64-bit AMD processor (Athlon 64, AMD Opteron), and Intel's Itanium CPU, J Series P4 Prescott, is mentioned to nVIDIA, Via, Transmeta as well as other companies also program to add the NX in its chip technology, but the speed of these providers updates NX too slow, consider some time just before the official launch.

approach to allow or disable DEP

By default, SP2 necessary Windows programs and services only to allow the DEP. But you possibly can also create their own, so that all applications about the pc enabled DEP, to be able to avoid the virus. In addition to Acrobat Reader5.0

instance, the make all the programs and companies are enabled DEP, approach of operation is: Account login with administrator privileges SP2, after which click on Double-click Enable DEP .

If you would like to a program (like Acrobat Reader five.0) to disable DEP, you are able to click the earlier mentioned Following the plan is especially vulnerable to attack, the virus can sneak to the plan, and then unfold to other programs around the computer and contacts in Outlook, and destroy your personal files. DEP is enabled, if any, right after the program can not purpose appropriately, you possibly can acquire the software vendor DEP-compatible model with the program, if no this kind of version is to disable DEP.


to help DEP, P4 Prescott

use of technology in keeping with EDB Microsoft's DEP characteristic,Windows 7 Product Key, Intel for their CPU developed technology. Presently Intel P4 Prescott (mPGA478 with LGA775 bundle) or for the C0 core stepping D0, the newest J Series P4 Prescott core with E0 stepping. Only J Sequence P4 Prescott with anti-virus function, only it definitely assistance EDB technologies to meet the SP2's DEP antivirus feature that enables for buffer overflow (buffer overrun) Vulnerability inside the style of the virus fail to avoid their replication and unfold to other programs .

Should you use a P4 Prescott / Celeron D (C0 stepping core) processors, upgraded to SP2, you may acquire a deadlock inside the Windows XP operating program, startup display, but don't place on P4 Northwood will have this difficulty. This really is considering that SP2 can open P4 Prescott (C0 stepping core) includes the EDB functions, but this kind of CPU and also the execution isn't EDB, EDB part of its internal energy transistor won't run, and for that reason trigger the system to die lock.

To resolve this issue, Microsoft has released within the September 14 amendment towards the relevant documents, we can visit Microsoft's official webpage to download. English edition of Windows XP users to obtain address is simplified Chinese model of XP people to download handle

to support DEP, AMD 64-bit CPU making use of EVP strategies

AMD 64-bit processors the first to support Microsoft's DEP technology. So that you can meet the DEP, AMD and Microsoft to style research and improvement of AMD's new chips function AMD 64-bit processors (which includes the Athlon 64/Athlon 64 FX / Athlon 64 cellular version / Sempron mobile edition, and so forth.) may have the EVP. EVP and SP2's DEP feature technical cooperation, to prevent

However, AMD 64-bit processors in the device right after setting up SP2, as long as your personal computer starts, the DEP function, and configure the needed driver files named Mpegport.sys hardware, once you utilize the Sigma Design Company Realmagic Hollywood Plus DVD decoder software program will conflict with the DEP. This is because older drivers are some comparable operation with all the virus, so SP2 to blunder it for that virus, which trigger the DEP, trigger the laptop or computer to repeatedly restart. To solve this issue, Microsoft suggests that customers update the older driver, or disable decoding software program for your DEP, flip off the SP2 virus protection.