Processor running at the wrong speed

In the future, it is best to give more complete information--like for example your laptop model number, operating system, the exact CPU, etc...

People are busy and if you're asking for help, make it easy on them

Speedstep requires:
1. A Mobile Pentium processor with Intel SpeedStep™ technology--I think you have that. The Northwood is a bit of a issue since the Mobile Intel Pentium 4 Processor - M was based on the northwood core, so I am guessing that is the processor you bought.

2. A chipset, BIOS, voltage regulator and operating system that supports Intel SpeedStep™ technology. I do not know if Henrik's bios supports it or not...I cannot find his original information.

3. Intel SpeedStep™ technology driver. This is supplied by the motherboard maker if your OS supports it.

4. An operating system that supports SpeedStep™ technology. You did not mention this. Windows XP supports it, but previous OS's require a special driver from the motherboard maker (see above).

If I were a betting man, I would say that Henrik's bios was not intended for the later model cpu you inserted. As I recall, it was intended to allow hyperthreading, not speedstep. As such, speedstep may just be defaulting to the lowest level.

I have pictures, avatars and signatures turned off. I have seen enough stupid space-taking manga inspired useless graphics to last me a life time.

I did not know you had a 5620 since it is in your signature.

I should have clicked on the link to the cpu-z image....my mistake. So it is indeed a Mobile Intel Pentium 4 Processor - M.

Nor did I know you were using Linux or Windows...knowing you had tried it in both would have eliminated that step.

I'm back to Bios.

From what I recall, Henrik took part of the BIOS code from a 5670 and grafted it into a 5660 bios...if you have the 5620, I wonder if placing the 5660/70 hyrbid was a good call.

The 5660 had the ati radeon mobility 9000--the 5620 had the 7500--and since the video bios was grafted on to Henrik's bios, you were taking a mighty big chance there.

Also note that the 5600 series came with a variety of different motherboards and chipsets. The 845e, for example, supported hyperthreading but not speedstep. The 845mp supported speedstep, but not hyperthreading (though it did support a simpler energy saving technology that was either OFF or ON). What do any of a number of reporting tools say you have regarding the chipset?

Without knowing what Henrik did, it's is difficult to say what you have going on....the switch in bios may not truly point to anything.

Not defensive--just explaining. That signature thing has caught me more than once. I really should turn it on...I just can't stand all those stupid 75kb multicolored eye-sores...they drive me nuts.

I still think that this ultimately comes down to the bios--maybe I just need to explain my rationale better.

The 5600 series notebook was designed as a desktop replacement with pentium 4 cpus (not mobile cpus). Hyper-threading was introduced with the 5670 and that is what Henrik was after--not speedstep capability.

I just don't think the hardware was ever intended to support speedstep, which is really a mobile technology.