I purchased a computer about 3 years ago which uses Windows Vista Basic and after a couple months of general use there would be a clicking/crunching sound on startup coming from the tower. The computer would then every now and then freeze with no other way of unfreezing it other than turning it off at the plug. This process would then repeat itself until eventually on reboot the system would display that the harddrive is not recognised. I contacted the people I purchased the computer from and they sent a replacement harddrive. The same happened again a further 3 times. Unfortunately me being an idiot and lazy I never pursued it and the warranty ran out. I am now wondering what to do with the computer, whether there is a fix for it such as a new PSU or a way to sell the unit to get some money back?