Ordered the above system. Firstly I had to re-install windows as for someone reason it was corrupt and wouldn't let me carry on with the set-up until I put windows on a pen drive and installed it fresh that way.
Once I got round this the system has been working for exactly a day before I was getting random freezes. About an hour after that it would just reboot itself and do one long beep followed by three short beeps. When it crashes the monitor flashes up the input methods as if it has just turned off and back on. Sometimes this will loop and it won't even get to the log in page again.
I've re-seated both the RAM and the GPU. Just gone to boot it up 2 minutes ago and now it won't let me put in my pin to log in (the keyboard lights are on and afaik it works absolutely fine).