I've just bought a second processor for my Dell Precision 450 but I'm having a problem.

When I install the second processor, the machine will not switch on at all. However, if I have only one of the processors installed (in slot 0), then the machine starts and works normally. I've switched the processors around but the problem remains.

Am I missing something? (I'm sure I am) Are there any jumper settings that I need to change to make it aware of a second processor on board? Do I need to get something else too?

Please help.

Thanks and regards!

Sal

PS: both processors are Xeon 2.8 GHz SL6VN's and the board is E7505 type.