Motherboard Problem

[sloop]

Hello, 

 

In early 2012 I bought a "Alienware X51" (The GTX 555 one). In December of 2013 I did a total upgrade. I bought a Fractal Design R4 case, a Nvidia GTX 780ti and finally a 750w PSU. I took the Micro ATX motherboard out of the Alienware X51 which included the i7 3770 processer and the 8gb of ram and put it in the new case. Since Christmas I have had a multitude of problems with it. Firstly if the power goes off to the PC and you reboot it the PC will then boot into the Windows 7 recovery menu which says "Press enter to run normally" and so on. When this bootmenu comes up I literally can't do anything. the boot menu just freezes and I can't do anything about it. When this happens I have to take my PC to the computer shop and pay the 40 pound bill at the end of it. Secondly, every time I start my PC up it says "POWER SENSOR FAILURE! Press F1 to continue or press F2 for setup utility." Again I cannot use my Keyboard to navigate this, I have to take my keyboard out and put a specific DELL keyboard in which is werid how that works but it does. My question is why it is doing this and also many Alienware users who have done this have had the same problem when moving the motherboard. I am guessing this happens with everyone with Aliewnare X51's when taking the mobo out?

[Tea1337]

I am thinking that your motherboard is going bad, or the BIOS may be corrupt?

[Tea1337]

Nope In fact It's a very commond problem... What I think is that it's cause by all that Dell's propietary bullsh*t:

It uses a power brick and an internal board for connectors:

I think that's some plugs for data, monitoring, whatever, take a look at this:

 

And that cable should be the problem

 

For example: HP Vectra VL400 had a different fan header just for the PSU, if there was nothing plugged It'd halt the system throwing "POWER FAN ERROR" alert. This one could be solved with a jumper

Wow, so I suppose putting in his own PSU just messed with all of this. 

[sloop]

@sloop

Do you still have the board marked in yellow and the cable in red?

Also where was that fan plugged?

I literally have everthing, even the last screw.

[sloop]

ok, could you answer my fan question too ?

Yeah I literally have everything.

[Sintezza]

So you basicly mean, that you cannot use your usb keyboard, but only a ps2 keyboard before windows is booted up?

 

if so, then this is a bios setting, that needs to be chanced.

 

something like USB legacy devices.

[sloop]

well, no, I asked about where it was plugged in

The fan connector is the same as you have on the image.