Dear Speedstep,   Thanks for the detailed response. It was really helpful.  I have found the schematic for a different motherboard in the internet which has the same chipset but some other chips are different. The motherboard is Gigabyte GA965-DS3 V3.3. Hence I am good.  My response along with the previous response is the solution to this issue   Thanks again for all the help.   Regards, Ronnie  
Dear All, I have a Dell OptiPlex  745 desktop whose warranty has expired on 6th November. I am trying to learn the internals of this laptop and study its power on sequence. To do this I want the schematic. My desktop is OptiPlex 745 Small Form Factor DCCY model. The motherboard part number is 0WK833. The motherboard has PWB WF809 REV A00 laminated on it. The USB ports and other connectors have Foxconn written on them. So it looks like a Foxconn Motherboard.  If someone has a schematic for this model of the motherboard along with the board view files, can you please share it ? I have done an extensive google search to the best of my abilities but was unsuccessful in finding them.   Thanks, Ronnie 
DELL Optiplex 745 Schematic