Hi I have recently purchased an I5 2500k upgrading from and I5 2400 and when I have installed the cpu it won't boot and says unsupported cpu installed and the pc will lower off in a few seconds I have a motherboard from a hp pro 3500 and the name of the the motherboard is foxconn 2abf and it has the h61 chipset which is strange because that chipset supports it I have the most recent bios update from there website and I don't know what to do is there a way to get round this and is flashing my bios safe?? I hope you can help me all I want to do is play with my new cpu