[expert] dual Athlon CPU not recognised under Mandrake 7.2?

[Peter Varnai]

Dear Experts,

I installed Mandrake 7.2 on a test machine:
Tyan thunder k7 board + 2 Athlon 1200 MHz
Mandrake 7.2

/proc/cpuinfo: only CPU 0 recognised ...

JHow can I get the kernel notice the second CPU?
Any help would be appreciated!

Peter