Spec and build yourself mate. Cheaper and you get what you want! I use the 'build your own' sites to spec up what I want, tomshardware to see bench tests then places like ebuyer and overclockers to get good deals.
It's just older tech agua, it's windows freezes, the wifi card gave up , the cooling systems suffering and now it's decided to die. So I'm just gonna give it to my cousin to repair as a backup PC. He does that as a hobby so
HD or graphics card Chi? My last AW died a slow death over a few months with similar symptoms. New HD and windows re-install got it back foir a while before one of the graphics cards eventually gave up