Win7 Ultimate system under the boot prompts automatic shutdown is how to solve the initial

Cause analysis:

Actually this is a worm. This worm causes LSASS.EXE to stop responding. This program forces the operating system to shut down after 60 seconds. If your computer starts to shut down, follow these steps to interrupt any system shutdown process that may be running.

The specific steps are as follows:

1. First click the run in the start menu under win7 Ultimate system, enter "ldd; cmd" in the run dialog box, press Enter to open the command prompt window. ;

2. At the command prompt, type “shutdown.exe -a”, then press ENTER. (Note - there are spaces before -a);

3, to mitigate the vulnerability, you can also create a log file to temporarily eliminate the vulnerability through which the worm can invade the computer.

4, create a log file steps as follows:

1) Open a command prompt window, type "ld chopromo >%systemroot%debugdcpromo.log ” at the command prompt, Then press ENTER to set the log file to read-only property;

2) Then type “ldrib;attrib +R %systemroot%debugdcpromo.log” at the command prompt, then press ENTER.

5, improve system performance

If the computer is slow to respond or the Internet connection is too slow, the worm may have spread within your LAN connection, which will make you unable to download and install The required software updates, so to improve system performance, the specific steps are as follows.

1) First press CTRL+ALT+DELETE on the keyboard, then click <;Task Manager>;

2) Then for each task listed below, single Click and select the task, then click the “end task” button to end it, then you're done.

Any task that ends with _up.exe (for example, 12345_up.exe).

Any task that starts with avserve (for example, avserve.exe).

Any task that starts with avserve2 (for example, avserve2.exe).

Any task that starts with skynetave (for example, skynetave.exe).

hkey.exe

msiwin84.exe

wmiprvsw.exe

Note: Do not end the wmiprvse.exe task; this is a legitimate system task .