Troubleshooting 
13.2 Problems when Using Modules of Third-party Manufacturers 
  SIMATIC Box PC 627 
13-2  Operating Instructions, Release 05/2006, A5E00362052-03 
Problem   Possible causes  To correct or avoid error 
The USB ports are 
disabled in your BIOS. 
Use a different USB port or enable the port. 
USB 2.0 device 
connected but USB 2.0 is 
disabled. 
Enable USB 2.0. 
USB device not 
responding. 
Operating system does 
not support the USB port. 
Enable USB Legacy Support for the mouse and keyboard. 
For all other devices you need USB drivers for the specific operating 
system. 
DVD: The front loader 
does not open. 
The device is switched off 
or the open/close button 
is disabled by a software 
application. 
Emergency removal of the data medium: 
1.  Switching off the device 
2.  Insert a pointed object, a pin for example, or an opened paper clip 
into the emergency extraction opening of the drive. Apply slight 
pressure to the contact until the front loader opens. 
3.  Pull the loader further out. 
13.2  13.2 Problems when Using Modules of Third-party Manufacturers 
 
 
Problem  Possible causes  To correct or avoid error 
Check your computer configuration: 
•  If the computer configuration corresponds with factory state, 
please contact your technical support team. 
•  If the computer configuration has changed, restore the 
original factory settings. Remove all third-party modules, 
then restart the PC. If the error no longer occurs, the third-
party module was the cause of the fault. Replace this 
module with a Siemens module or contact the module 
supplier. 
•  Force a “Reset Configuration” using the BIOS setup. 
•  I/O addresses are assigned 
twice. 
•  Hardware interrupts and/or DMA 
channels are assigned twice. 
•  Signal frequencies or signal 
levels are incorrect. 
•  Connector assignments deviate. 
•  “Reset Configuration” in BIOS 
SETUP has not been carried 
out. 
If the PC still crashes, contact your technical support team. 
 
The PC crashes 
during startup 
•  If the performance of the 
external 24 V power supply is 
insufficient 
•  use a larger power supply.