posted on Oct, 25 2012 @ 07:13 PM
There could a variety of factors at play here.
For one, as said above, the actual hardware could be reaching the end of it's useful life. That is always something to bear in mind.
Also, over time, your computer can become a mess, file wise. I've had problems before on XP where after 6-9 months of use it would be noticeably
slower, but this would be 6-9 months of installing/uninstalling games, programmes, moving files, copying pictures...the usual. A defrag would help,
but often a clean sweep and a total re-install of windows is the only way to get your machine running at full pelt, simply because it isn't full of
crap.
For example, I built a new PC a few months ago, a right monster of a machine too. i7, 16GB RAM, 2 x SSD's, the lot. When I installed windows, it took
10 minutes, not the usual 2 hours on an HDD!. On startup, it was POST to Windows in under 10 seconds.
Now, after installing a slew of games and other programs, I now have to wait a whole 20 seconds from POST to login (I know - ages right!), simply down
to all the extra crap I've put on the machine since it was "born".
If you keep on top of your housekeeping, everything should run fine. Also, don't forget that Windows likes to index things, it loves page files etc.
All this extra crap is largely unneccesary and I turn it off, but it can be a major drag on the system if you leave it all at "default", especially
if your hardware resources are tight as it is.