I lost my HT...?

Hey guys, so more fun things with my new pc. I have the i7-3770k and it running all nice, I look at the performance tab and see the 8 cores running along (I know 4 of them are because of the hyper-threading) but I just took another look a day later and now they are missing... I looked in the BIOS and it is still enabled, and in Device Manager under CPU I still count 8 of them, so are they still on, or whats going? Should I be worried about this?

http://www.alcpu.com/CoreTemp/, also http://www.cpuid.com/softwares/cpu-z.html. Use those

Thank you it turned out that I basically turned off half my CPU because of the start up core in MSCONFIG. Never had to deal with more then 4 before. XD