Ten days fetteling PC due to problems and mail order delays.
Added new video card. Switch mains back on and router dies.
Buy new ADSL router and impulse buy faster processor.
Added new processor wrongly and broke cpu and/or motherboard.
Tried old cpu fans spin but no boot. Certainly motherboard.
New motherboard and another new cpu obtained. Fans do not spin new motherboard does not like old power supply.
Added new power supply and the completely dead system leaped into life.
I didn't really need the video card.