How can I see if my Intel® Hyper-Threading is enabled or disabled on my Windows 7?? There is a way to change it?
The easiest way to see if it's enabled is to check how many physical cores your processor has then look task manager under the preformance tab. If you have dual core and see 4 threads or a single core and see 2 threads (pic below) then hyper threading is on. You can always search your processor model on the Intel site to get a physical core count or you can use a tool like CPUz.
For example below is a quad core with hyper-threading enabled so we see 8 boxes (or threads)
Turning it on and off has to be done from the Bios. It will usually be under "advanced options" or something similar and will clearly state hyper threading (at least in every bios I have seen).
This will probably tell you the most about your processor, other than the spec sheet.
With some processors, you can indeed turn Hyper-Threading on and off: It is usually in the BIOS.