0x01421720 instruction is 0x0000004 The memory cannot be read

1. The driver is unstable and incompatible with the system, which is most likely to cause memory cannot be read or file protection 2. The system has installed one or more rogue software, which has a greater chance of IE or system crash, and there may also be file protection 3. There are conflicts between the programs loaded by the system or the programs that the system is running, especially some antivirus software monitoring programs 4. There are vulnerabilities in the system itself, which makes it vulnerable to network attacks. 5. Virus problems are also the main causes of memory can not be read, file protection, error ......6. If the memory cannot be read when playing the game, it is likely that the graphics card driver is not suitable (the unsuitable here has a graphics card that is not suitable for the game and the computer), or it may be that the version is not new enough or does not meet the game and the graphics card driver 7. The problem that some of the software itself is insufficient 8. The computer hardware is overheated, which is also one of the reasons why the memory cannot be read. 9. Poor compatibility between computer memory and motherboard is also the fatal reason why the memory cannot be read!

I recommend that you don't have any hope of fixing it, just start from scratch, it's unlikely that such a problem will be fixed, I've also encountered this problem, I've tried countless methods on the Internet, but it didn't work.

If the browser is IE8, many netizens report that it is not very stable now, reduce the version or upgrade to try, if not, it is recommended to change to other versions of the browser. For example: 360 secure browser, window of the world. If you don't want to change it, try the following method:

Answer: [Original] Copying is strictly prohibited&. Friend! If you have a problem that you have solved in other ways, please say it for other friends to solve. Thank you!

The emergence of this problem is relatively common, and there are several main aspects:

If you use a pirated system, there is a possibility that such a problem will occur, it is recommended: use the genuine version.

If it doesn't affect your computer or happens occasionally, leave it alone, and restart your computer to disappear automatically.

Viruses that are caused by viruses are completely anti-virus to the computer.

The hardware is mainly caused by incompatible memory modules, and the memory should be replaced if necessary.

system or other software. [The ghost version of the system is prone to this problem].

Open or close IE, QQ, games, **, etc., the memory can not be read or written, the first thing that comes to mind may be the problem of this software, (the general solution is to uninstall and reinstall, upgrade or replace other versions, no, only uninstall the software, the problem can be solved).

1) If there is a problem with the system itself, install the official patch in time, and reinstall the system if necessary.

2) If there is a problem with a certain software, here is mainly to look at the software running at boot, [use 360 and so on to check the software running on boot, and remove the software that does not need to run].

3) Software conflicts, uninstall the problematic software. (e.g., when installing or running, upgrading, patching, replacing another version, or uninstalling the problem).

There are two ways to deal with it: If it doesn't work, you can only restore or reinstall the system

Trial command exclusion.

Start Run Enter cmd -- Enter, and enter the following command in the command prompt.

for %1 in (%windir%\system32\*.dll) do s %1 enter.

When you're done, underneath the input.

for %i in (%windir%\system32\*.ocx) do s %i carriage return.

If you are afraid of typing mistakes, you can copy these two commands, then right-click the mouse button after the command prompt, hit "paste", press enter, and wait patiently until the screen scrolling stops. Restart your computer

Run regedit into the registry, under hkey local machine software, microsoft windows, currentversion, explorer, shellexecutehooks, there should only be one normal key, and delete the rest. [If there is another (default) leave it alone, it is usually empty].

The problem of memory, it is estimated that the memory is incompatible, you try to change the memory to see it.