Msi-6712 kt4v

Question

Hi there everyone
Please bear with me as I am a pretty new to this whole upgrade stuff.
Ok I decided to upgrade a spare system from a 450mhz p3 to an amd based system on a MSI6712-kt4v amd2600, sounds OK so far.
Installation went OK, everything aligned OK, all cables seated OK have triple-checked, but guess what...no power to anything at all whatsoever.
Have installed a new PSU Jeantech 400w, nothing at all.
I also took off all the unneccessary PCI cards, Modem, Network, leaving on an AGP based graphics card
Yes I realise I have probably done something very dumb somewhere and possibly fried the lot, but could someone give a couple of pointers.
Many thanks and hanging my head in shame
Pilmart.

Answer 1

Hi pilmart,
WARNING
YOU MUST DO THIS ENTIRELY AT YOUR OWN RISK!!!
This is the order when checking a faulty board
Conditions
1) Mobo on bench protected underneath by cardboard [ not conductive foam ]
2) Install Processor and fan and install memory
3) Connect PSU
4) Identify "Power On"  pins on the front board connections to Mobo
    [ This will be situtated near the front along with HDD LED, Reset Speaker etc ]
5) Apply power to PSU and momentarily short out the "Power On" pins with a small insulated screw driver [ This is similar to pressing the start button on the front of your PC ]
CARE MUST BE TAKEN AS SHORTING OUT THE WRONG PINS WILL PROBABLY DAMAGE THE MOBO
If all is well, then the fan on the PSU will work and so should the fan on the processor.  This will indicate at the very least that the Mobo, Proc and memory maybe OK but not proven.
If you still have no result [ i.e no power to the fans ]
Then check
BEWARE OF STATIC ELECTRICIY - DISCHARGE YOURSELF FIRST
1) Check the position of the Clear CMOS pins on the Mobo, these pins by default should be open, but temporaily shorting out these pins will clear the CMOS. If you leave them shorted permanently then the PC will not start.
2) Check the memory by subsitutuion
3) Check the processor by subsitution
4) Check the PSU by subsituition
5) Check CMOS IC is firmly seated [ Not so common today due to SMD ]
Apart from the fact that some one has already suggested the 4 pin 12volt supply to the AMD CPU [ I don't think that you PC has one ] and all the other items have proved to be working by subsitution then it looks like the Mobo is at fault.
If the fans do start, then...
Switch off, and install the graphics card and connect a monitor
Switch on and restart the Mobo as before and check what is happening on the screen.
1) No picture - check graphics card on PC
Please Note: If you Mobo has "On Board" graphics place the header on first and try.  If still no picture you can alway fit a PCI graphic card just tp prove the point.
If you have fans running but no picture on the monitor then it is advisable to fit the speaker to the Mobo.
Borrow the speaker from your PC case.
With the conditions as below
BEWARE OF STATIC ELECTRICIY - DISCHARGE YOURSELF FIRST
1) PSU
2) Processor & fan
3) Memory
4) Graphics card and monitor or "On board" graphics
5) Speaker connected
Power up and listen if you are lucky you may hear a series of beeps.
These beeps indcate that the BIOS is in the process of performing the POST
If an error occurs during the POST the beeps will give a clue as to where the problem lies
The number of beeps will determine the area of the fault.
No beeps - No picture - but everything else proven to be OK then the Mobo is probably at fault.
Physical check:
When I buy a new board I always check it on the bench first.
If you have installed it before trying it then there is the possibilty that you may cause damage to the print.
The areas to check for damage are underneath the support lugs used to secure the Mobo to the Mobo tray [ inside the PC case ]
Print around the the fan securing clip. I known people damaging the fine print around the fan clip by being rough with a screwdriver when trying to secure the clip.
If you have a picture....
If the picture i.e Boot Screen appears then you can start adding things like mouse keyboard HDD etc until you have a complete PC but laid out on the bench.
WARNING:
Unless you are confident when working with a PSU Mobo etc outside the case, then I do not encourage you to do so.
You must be careful and tidy.
You must have the power switch close at hand
You must take care to discharge yourself from static electricity before handling processors and memory and mobo
You must proceed each step and note the result.
 WARNING
YOU MUST DO THIS ENTIRELY AT YOUR OWN RISK!!!
I WILL NOT BE HELD RESPONSIBLE FOR ANY DAMAGE RESULTING EITHER PERSONAL OR TO EQUIPMENT BY YOUR EFFORTS TO FOLLOW THIS ADVICE
You can if you wish do this inside the case, and leave the power on pins connected to the front switch if you feel better by doing so
Hope this helps
Kind Regards