It was the machine that is freezing that I wanted to know if it was a desktop or laptop.
Also which version of Windows is that machine using ?
When it's that quick then I would suspect overheating, but with a desktop it can be that or the PSU.
With frequenting FB, then there's the possibility of an infection, but see what treating it as an overheating problem does first.
With just 5 mins to play with you won't have time to download the free version of HWMonitor to check the temperatures.
If you can, scroll down and click on the SETUP • ENGLISH button
http://www.cpuid.com/softwares/hwmonitor.htmlIf it's a laptop then I suggest you start by giving it a good blow over with a can of compressed air - they are known as Air Dusters.
Blow over the intake on the underside, the side vent and over the keyboard as some makes of laptop draw air in through the keyboard.
If it's a desktop then you will need to open up the case and check the interior for dust and fluff.