Something is wrong with my PC?

[Jim Kvarnberg]

I assumed a flaw in the hard drive in my PC that caused the mouse 
grabbing issue and I resorted to purchasing a brand new hard drive.  
When the replacement and installment of Ubuntu 9.10 was done, the 
problem recurred!!  When I booted PC up straight from the Live CD, 
....no problem.  What next step should I do?  Should I take the PC to a 
shop for diagnosis?  Are the technicians familiar with Linux based OSs?  
I am scratching my head!  
Jim