A friend's pc build.

[Blindfire]

So a friend of mine bought parts to build a new pc. All of the parts are brand new but the cpu light is on on the mobo. We figured it was a cpu or mobo problem so we sent them back to Intel and Asus respectively. Both new components have come back but still the same problem. We have tested all of the other components and they all work. For whatever reason the cpu and mobo are not working together. the cpu is an Intel i5 and the motherboard is an Asus P7P55D. Anyone know what might be wrong with it?

[Amarisa]

is the power supply plugged in properly?
is the connection cables to the case plugged in properly?
do you get to the bios at all?

would be nice to know more and perhaps pics too.

[Blindfire]

No bios, everything is plugged in properly. Can't even get a signal sent to the screen but the gfx card works flawlessly in another pc.

[BlackFox898]

if you can't get to the bios then it's either the mobo or psu. it is plausible that you got 2 dead mobos in a row, they can be easily damaged by shipping. psu wattage? also there are several variations of this mobo, which one is it?

[[SD]Twysta]

if you can't get to the bios then it's either the mobo or psu. it is plausible that you got 2 dead mobos in a row, they can be easily damaged by shipping. psu wattage? also there are several variations of this mobo, which one is it?

I think he means that he got the same mobo and cpu back.

Anyway, what psu you have?

Sounds to me like psu problem/mistake.

[xzaz]

Well here you have your awnser:

1. The internal power supply turns on and initializes. The power supply takes some time until it can generate reliable power for the rest of the computer, and having it turn on prematurely could potentially lead to damage. Therefore, the chipset will generate a reset signal to the processor (the same as if you held the reset button down for a while on your case) until it receives the Power Good signal from the power supply.
2. When the reset button is released, the processor will be ready to start executing. When the processor first starts up, it is suffering from amnesia; there is nothing at all in the memory to execute. Of course processor makers know this will happen, so they pre-program the processor to always look at the same place in the system BIOS ROM for the start of the BIOS boot program. This is normally location FFFF0h, right at the end of the system memory. They put it there so that the size of the ROM can be changed without creating compatibility problems. Since there are only 16 bytes left from there to the end of conventional memory, this location just contains a "jump" instruction telling the processor where to go to find the real BIOS startup program.
3. The BIOS performs the power-on self test (POST). If there are any fatal errors, the boot process stops. POST beep codes can be found in this area of the Troubleshooting Expert.
4. The BIOS looks for the video card. In particular, it looks for the video card's built in BIOS program and runs it. This BIOS is normally found at location C000h in memory. The system BIOS executes the video card BIOS, which initializes the video card. Most modern cards will display information on the screen about the video card. (This is why on a modern PC you usually see something on the screen about the video card before you see the messages from the system BIOS itself).
5. The BIOS then looks for other devices' ROMs to see if any of them have BIOSes. Normally, the IDE/ATA hard disk BIOS will be found at C8000h and executed. If any other device BIOSes are found, they are executed as well.
6. The BIOS displays its startup screen.

Its somewhere between 1 and 5, check everything and do some research about hardware that are not compatible with each other.

[Blindfire]

He decided to take it to a guy in town that fixes computers, hopefully he gets shit sorted out.

The psu is also working in another pc. We got brand new cpu and mobo when we sent them in.

[Disconn3cted]

Are you sure the power supply is powerful enough for this computer? If you don't even get to the bios then I don't think its getting enough power.

[Blindfire]

It's a 650W, it's plenty.