Hi all. After replacing a dead cpu fan (spotted after "Warning - cpu fan failure detected" message flashed on screen), I am still getting this message at boot up. The fan (3 pin) is running fine. There is no option on screen to access the bios to investigate further and I've tried every permutation of F1, F2, Esc, Del etc etc.. Have reset bios by removing the 3volt battery and also resetting the jumper. The computer will not go beyond this warning page. Any advice on what to do next?