why my Intel Core 2 Duo E6550 is downclock

[JHang]

My Intel Core 2 Duo E6550 is downclock from 2.33 GHz to 1.83GHz and when i go into my bios to set him back to 2.33 bios crash.

Can anyone help me ?

[Silvia_L_Intel1]

The reason why the speed of the processor is decreasing could be because EIST is enabled. EIST comes from Enhanced Intel SpeedStep® Technology

Additional information about this technology could be found at this URL http://www.intel.com/cd/channel/reseller/asmo-na/eng/203838.htm Enhanced Intel SpeedStep® Technology - How To Document

Usually this can be disable in the BIOS.