We usually find old PCs or personal computers in surpluses and in malls. Friends of friends sell their old PCs and the very low prices of these can be very attractive. More to this, they can be branded – a Sony or an apple perhaps. But as promising as old PCs can be, if you have a budget for a new one, do not buy these products!

Here are five reasons:

• Operators or owners won’t admit of on how long they have been keeping these second hand PCs

Malls or surplus computer shops would cite...