I have a dell t5500 workstation with 2 Xeon x5550s, windows 7 pro 64bit does not see second cpu

[Cornage626]

I have a dell t5500 with two Intel Xeon x5550s, Windows 7 pro 64bit does not see the second CPU. I have the latestes bios and chip set versions. Windows recognizes the ram on the riser board. I have messed around with the bios setup settings and nothing seems to work. Any ideas?

 

[GravesDancer]

I have a dell t5500 with two Intel Xeon x5550s, Windows 7 pro 64bit does not see the second CPU. I have the latestes bios and chip set versions. Windows recognizes the ram on the riser board. I have messed around with the bios setup settings and nothing seems to work. Any ideas?

i;m having the same problem when i turn on hyper threading it just read one processor ....did you solve it please?

 

[GravesDancer]

Try the same solve. If no joy leave HT off, its possible your board cannot function that many threads, tho being frank if it is a two cpu board you would probably go slower with HT turned on.

i have been a month trying to find a way ...even i have posted this without getting any answer
i have a Dell precision case T5500, it's have a 2x xeon processor X5650 (12 cores 12 threads)...when i enable the hyperthreading from BIOS, it just reads one processor 6 cores 12 threads....why not 2 processors ( 12 cores 24 threads) ?

here's image of CPU

when i change to HT mode ...it reads 1socket 6cores logical processors 12

I've talked with dell tech support, they said update your bios and check your processors number again, but when i'm seachred about the last update and if people tried it, i found out that who tried the last bios updates they PC stopped working again :/