fujistsu hardrives are not too my liking anyway
just a though is the speed of the drive 5400 rpm or 7200 rpm
this may be down to the fact that you have installed a new motherboard,cpu,ram etc
and kept the same hardrive and operating system and applications on it, installed into this new setup (so to speak)
this can cause some confusion in windows, and therefore may slow the operation of software.
it is recommended to do a clean install of an operating system after a major upgrade, of a motherboard ,cpu and ram
this may be the problem.