Motherboard upgrade problem

Hi,

I have recently just bought a new motherboard and Sempron 2600 processor. I have installed it fine, heatsink & fan sitting perfectly in line. It was the retail boxed processor which came with heatsink & fan and pre-applied thermal pad. Here lies my problem. I turn it on, i get the green led light on the board to say the power is there, the fan spins on the heatsink but i get absolutely nothing else. No beep, no BIOS, no nothing. The board manual has nothing on jumpers for multipliers etc. I have reset the bios and still cannot get a thing out of it ( Has anyone got any suggestions as I've spent a fair bit of money on this... Any help would be greatly appreciated!

 

Boilerplate-01:
. Common causes of failure to boot (no video, no beeps) assuming PSU isn't totally dead:
1- RAM, CPU and/or AGP video card not seated properly, a bent pin or corrosion.
2- Drive data cable on upside down or only on half the pins or shifted a pin or two (usually Floppy or Zip drives).
3- CMOS needs to be cleared (AC power must usually be disconnected or . attempts to clear CMOS may fail) Unless your mobo does not use a power-off CMOS clear - check your mobo manual for specific info.
4- On some new mobos there is a CPU protection feature (esp. on Asus/Asrock Athlon/Socket A mobos) that will not allow the system to start if there is no fan (or a fan without a working speed sensor wire) connected to the CPU Fan power connector on the mobo (specifically marked "CPU Fan"). If you tried to start your machine without a fan properly connected, you have to attach a proper and working fan and clear the CMOS before it will boot.
.bh.

 

did you plug in the AUX power cable onto the mobo? (usually near the CPU)

 

That depends on the board, as my mate's PC did the same thing - this was back when the extra 4-pin plug wasn't common and we were scratching our heads for ages...

 

I was not aware of the 4 pin connector thanks. I've not had time to test it, but i've a similar machine here at work with same connectors etc. Removing the 4 pin power lead, I get the exact same problem as I'm having at home, so it looks like this could definitely be it! Thanks guys, you have made my day ) I just hope my PSU has the lead....

 

Hi,
Had the same thing with a upgrade on a motherboard, u need 2 upgrade ur power supply 2 an ATX. Go for something like a 350w upwards (£10-15ish).

 

The PSU is an ATX. I just didn't realise that newer motherboards seem to have 2 connections for power....

 

Job done. I feel like an idiot. But hey, I've never come across them before lol. At least i know for the future. Thank you all