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Windows 7: Computer is not booting at all.

19 Jul 2012   #11

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

There is something missing here. Something overlooked.

I assume you installed the old processor in the new board. So it can't be that the processor has unseated. Did you visually inspect the pins on the processor?

I'm going to suggest my standard no boot diagnostic. Give this a try and start with the motherboard out of the case. You are trying to see if you can get the board to light up without anything connected.

****
New System Failure Diagnostic

Basic diagnostic procedure is to uninstall the entire build and start over. Some people do this out of the case by placing the motherboard on an anti-static surface. This eliminates the possibility that there is a short circuit between the motherboard and the case through the connection posts (stand-offs). A standoff in the wrong location or a sloppy job will cause a short.

The Test (power off, power cord unplugged):
  • Disconnect everything externally connected except the mouse and keyboard (printers, USB devices, etc). If you are not using a wired mouse and keyboard see if you can borrow one. The wireless device is just another component you have to deal with.
  • Disconnect the power and data cables from all the drives inside the computer (Hard drives, DVD/CD drives, etc).
  • Remove all the cards installed in the expansion slots (PCI/PCI-e) including the video card. (Be careful handling them and place them on a non conductive surface while testing).
  • Remove all the RAM sticks (same rules as above).
Now connect the power cord and turn the PC on.
  • The motherboard should start beeping. You should get a beep code that tells you there is no memory. This is good, it means the processor is functioning and the motherboard is good so far.
  • Now add one stick of memory in Slot A1 and power on. More beeping: "no video card" beep code. This is good.
  • Then add the video card and connect it to the monitor. You should get no beeping and you should see the BIOS start screens, ending with the message that there is no boot device.
  • If you get no video then switch the one memory stick installed for another one and test.
  • If you do get video then start adding components back, one at a time, until the system fails to boot. The last component you added is then the problem component.
****


I would try this without a CPU to start. The board should do nothing - no beeps - but you just want to see if it gets power. Try both boards and both power supplies.

It is a weird one.


My System SpecsSystem Spec
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19 Jul 2012   #12

Windows 7 x64 Home Edition
 
 

Sorry I am using a i5 2500 on the newer board, there are two boards that are exactly the same they are the foxconn z68as, those two will not show the led with neither my 300 watt or 600 watt psu. But my older motherboard which is a gateway board about 6 years old with a pentium D will power with the 300 and 600 watt psu. I will try the above and post my updates I just hope the board is not doa, can the board light up without the cpu installed? Also this started with a new case I bought the zalman z9 .
My System SpecsSystem Spec
19 Jul 2012   #13

Windows 7 x64 Home Edition
 
 

Tried the testing above with everything above, no beeping or any kind of life from the board besides the sound of power in the psu..
My System SpecsSystem Spec
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20 Jul 2012   #14

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

There remains the possibility that you have 2 bad power supplies or 2 bad motherboards, even though I find that to be highly improbable. But my beliefs do not change the fact that it is still possible.

The issue seems to be confined to those 2 components now. I would carefully inspect all of the wiring - look for broken/bent pins or anything out of the ordinary.

I don't know if the motherboard would show power at the LED without a CPU or not. I have never tried that, and until now it never occurred to me that it might be necessary to know. And I don't know if a failed processor would affect the power reading to the board (but I doubt it).

As I said before, there is something odd here. Something missing or overlooked.
My System SpecsSystem Spec
20 Jul 2012   #15

Desk1 8 Pro / Desk2 7 Home Prem / Laptop 8.1 Pro all 64bit
 
 

May I make a suggestion here fellas Swifty can you take apart the two PSU's and take a look - easy to see bulging caps and or burnt boards or even dry joints on the out wiring!

Have an interest here as I have just shipped machine to my brother in the UK and I packed it with bubble wrap to stop the tall cooler from sideways G forces.
My System SpecsSystem Spec
20 Jul 2012   #16

Windows 7 x64 Home Edition
 
 







Here are 3 pictures of the power supply I have been using for my build the power supply has been used for about 4 or 5 years maybe its just that time to get a new one, I am uncertain what I am looking for so I posted these 3 pictures, the weird white stuff I have never seen before. Must be some type of adhesive?

It is very possible that it could either be the power supplies or the Motherboards, all I can do for the motherboard is an RMA with Foxconn.
My System SpecsSystem Spec
22 Jul 2012   #17

Desk1 8 Pro / Desk2 7 Home Prem / Laptop 8.1 Pro all 64bit
 
 

Hiyya Swifty sorry for late reply mate that looks like adhesive to me and it seems fairly dust free - unless you have given it a bit of a clean out of course.

Hard to see if there are ant "dry" joints - that is easy to see if you move them out coming ones and look at where they are attached / soldered to the board you will see definite movement if they are dry.. In that case it's only a matter of retouching the joint with an iron and some good solder - many different brands and qualities. I use the silver solder to be sure.

But having said that PSU's a re reasonable priced and would solve that problem full stop. Personally I like the Corsairs and Seasonics.

One thing I did think of was that I once did a machine like you have done and I couldn't get it to boot and was at it for hours trying all sorts of voltage tests and such when I found I had very stupidly forgotten to replug in the four pin lead - is that one in?
My System SpecsSystem Spec
24 Jul 2012   #18

Windows 7 x64 Home Edition
 
 

Thanks sorry for not replying so quickly, the 4 pin is plugged in, it just seems nothing gives power to the motherboard so what I am going to do is buy a new power supply and see if that is the solve I need if not I will be looking at another motherboard brand probably asus.

I'll keep you guys updated!
My System SpecsSystem Spec
25 Jul 2012   #19

Desk1 8 Pro / Desk2 7 Home Prem / Laptop 8.1 Pro all 64bit
 
 

Ok Swifty good luck mate oh Corsairs are a nice unit mate have had no trouble with mine and are not expensive.
My System SpecsSystem Spec
15 Aug 2012   #20

Windows 7 x64 Home Edition
 
 

So I had purchased a new power supply a 750watt XFX brand. It still is not giving me the green light on the motherboard. So I guess I have narrowed it down to it either being the motherboard, or a dead processor. Still uncertain if the board would post a green power light without the processor being in its slot.
My System SpecsSystem Spec
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 Computer is not booting at all.




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