My freshly bought computer's BIOS is not showing up. What do i do?

The most likely problems are:

Missing CPU 12V power cable connection (4 or 8 pin to the motherboard somewhere near the CPU).

Missing 12V power cable to the GPU, if you are using a plug-in graphics card.

Incompatible RAM; not all types that appear as if they should work actually do in practice...

Or it could be faulty; try only one stick as a time.

Try momentarily connecting the CMOS Reset jumper, if it has one. Only do that with power off and the PSU discharged (hold the power button in for around ten seconds). Remove the jumper again and try booting up again.

Make sure you have not accidentally put anything on the RESET pins on the motherboard front panel connector, other than a reset switch cable. If you have a cable on it, try removing it in case the switch is faulty.

If you can't find it from the above, you need either a speaker connected directly to the motherboard speaker pins to hear the BIOS beep codes, or a POST card plugged in to display the test stage it's failing at.

Headphones are no use; the actual sound card type system on the motherboard does nothing until you have an operating system and drivers loaded. The BIOS / POST system drives a little speaker directly.

Older PC cases had a small loudspeaker included but newer ones omit that, which is a bad idea - it's the motherboard speaker that gives things like overheat warnings if the CPU fan gets clogged or fails, before things start to get destroyed..

Examples:

http://www.ebay.co.uk/itm/Motherboard-BIOS-POST-Sp...

A couple of POST debug cards - you need to look up the code numbers for the make of BIOS in teh motherboard (AMI or whatever) and then with the card, you can see why it is not finishing the self-tests and continuing to the BIOS screen or boot:

A simple cheap one - I have one like this:

http://www.ebay.co.uk/itm/New-4-Digit-LED-Display-...

A newer fancier one:

http://www.ebay.co.uk/itm/PC-Motherboard-PCI-Diagn...

I don't think it ever boots up through the BIOS. I'm saying that the fans and hardware seem to be working fine.

What disc? I never brought up a disc.

I did that.

Is the speaker plugged in? If there is any error, you will get beep codes, indicating what the problem may be. If you get just the one beep on startup (boot), then the hardware is fine.

It sounds like the BIOS isn't loading when your turn your computer on... How do you know stuff is working when you can't even get into the BIOS?

Or are you saying the computer boots but you can't get it to go into the BIOS?

When you turn on your computer your BIOS loads then does a Power On Self Test. If something is wrong it will beep a code in the PC speaker to tell you what's wrong. If it passes the POST then it will proceed to boot the OS.

If something is really wrong (like with the CPU or RAM) the BIOS won't even load, you'll just get a black screen when the computer turns on.

There are tons of guides out there on troubleshooting a computer that won't boot, it mostly involves removing parts until you find the one that's keeping the computer from passing it's POST.

I do not understand some of the statements you are making.

You say your P.C boots up but to boot up it requires BIOS to run.

You say the Disc is working but if nothing is being displayed how do you know. is it just running up.

What do you mean re configuring RAM. ie moving it around. Just use one stick at a time for fault finding