Computer, Hardware, Services, Windows, Error Codes, Viruses
Hardware -
Motherboard
Windows -
How to shutdown the PC
Depending on the operating system version, PC can be closed as follows:
Windows XP: Click Start, Turn Off Computer and select the Turn Off, then wait the computer to shut down
Windows Vista: Click on the logo of the Windows Start menu, then on the right side near those 2 buttons, there is a small arrow oriented to top. Click it, then select Shut Down
There are other 3 ways to close the computer:
Hibernate
Stand By
Suspend
We can activate them from the same menu as for nor
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Error Codes -
pfc.sys
This error is caused by DEP (Data Execution Prevention).
Solution:
Right click the My Computer icon, select Properties, in the new dialog, click the Advanced tab, in the Performance group click the Settings button, now click the Data Execution Prevention tab, now select Turn on DEP for all programs and services except those I select:, now click the Add button at the bottom and browse to C:\Windows\SysWow64\drivers\pfc.sys (assuming Windows is installed in the Windows folder on your C: drive)
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Services -
ati2evxx.exe
Activation and Deactivation
The process might be stopped from Services. The process under which name runs is ATI Hotkey Poller
What happen if I stop it?
It is not a critical component, but it's recommended to run.
Name
ATI External Event Utility EXE Module AKA ATI Hotkey Poller
Location
C:WINDOWSSystem32
Origin
ATI Technologies
Service scope
Video card driver.
Viruses that can take this name
Not a known one which runs at it's location
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Viruses -
BackDoor-CHT
Risk of infection : low
Type : Trojan
Distribution Methods : IRC, peer-to-peer networks, email
Mode of infection
The virus installs in % SYSDIR% directory as hkdoordll.dll. (eg: C: \ Windows, C: \ Windows \ System, C: \ Windows \ System32)
It adds these keys in Windows registry:
HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Services \ netwall "DisplayName" = "netwall"
HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Services \ netwall "ErrorControl" = 01, 00, 00, 00
HKEY_LOCAL_
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