Vista 32bit wheel of death

Hi,My neighbours Acer laptop has the wheel of death wizzing around aprox every 3 secs.
I've done a MBAM Pro full scan, Avast free full scan, and run adwcleaner and hitman Pro
and all run clean showing no threats.
Does anyone know what could be causing the wheel of death?also unable to connect to Sky
wifi it keeps connecting to btfon and there no way of stopping it.Spent hours on the phone
to tech guys from sky and bt but no one can solve it.Sky are going to send a new router to see if that fixes it.
But i'm not holding my breath.
Thanks in advance for any help.

Welcome
Tommy, that wheel of death is probably caused by software that freezes. Try a clean boot to determine the cause.
Troubleshoot Application Conflicts by Performing a Clean Startup - Windows 7 Help Forums

Thanks for the link,i followed the instructions and wheel of death has gone and cpu does'nt sound like it's
having an asthma attack.

I do not think that you are done. You have to put back the services one at a time to find the cause.