Time to run something like :
Ccleaner
Windows Cleaner
My personal favorite : Advanced System Care free from www.iobit.com
Glary Utilities

Poser 10 should be rock steady (with the SR's applied) on Windows 8 and 8.1

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!