LeeHamo said:
OH NOOO.
Heuston we have a problem.
Took it all apart again, noticed that yes the heatsink was on the wrong way round, re done it put it all back together and now it wont work at all.
Powers up but doesnt load anything and the screen says no signal.
AAAAAAAArrgghh
Please advise, youve all been a great help so far.
Retrace your steps.
1 - remove the heatsink from CPU and clean all the thermal paste from both the CPU and the heatsink itself. Use some cleaning solvent to get rid of all traces of the old stuff (nail polish remover works well if you dont have the real stuff).
2 - apply a small amount of thermal paste to the heatsink, and spread it out using a flat piece of plastic, eg old credit card/ruler etc.
3 - Insert your cpu into your mobo first, and secure it properly (is it Intel 775 or a pin based one like Intel socket 478/AMD 64/ x2 etc ?
4 - line up the heat sink, try to get as close as you can without touching. Aling all the holes / pins whatever, and the gently lower the heatsink onto the chip. Once it makes contact try your best not to move it.
5 - connect all the securing bits.
6 - connect the fan.
7 - If you think the case is still too hot, a good temp solution is to take a desk fan and use it to run air over the entire board (case side off, angle fan from front to back).
8 - check all case fans are running. If you dont have case fans, get some. Seriously. 120mm are best if you can fit them (space wise) as they move the most air for the least RPM, and are therefor quieter.
When you remove your CPU, check all the pins are straight (if it has). If you find a bent pin, you can straighten it, but do it ever so gently and slowly.
Make sure all perpherals are disconnected including hard disk / floppy / cdrom etc - first thing you want to do is get the board running. For this you need power, (make sure you connect the ATX small 4 block connector if your board and power supply have them). Install the gfx card, memory and then power it up. You can leave all the front USB and audio etc disconnected until you are happy the board/cpu/gfx are ok.
If it POSTs, then the next step would be to get the hard disk connected. Connect 1 thing at a time until you find what is causing the issue.
Good Luck!