All sorted now, if anyone else encounters this problem-
Enable Hyper threads in bios> msconfig> boot> advanced options> number of processor:8
Thanks for the reply
Hi I tried your method. First enabling HT in bios,then once in windows in msconfing, I only can see 4 in number of processors not 8 like you described. When hyperthreading is enabled in bios, only 2 cores and 4 threads work and CPU is stuck at its stock clock speed and won't boost. When HT is disabled in bios, 4 cores 4 threads show in windows and CPU is boosting normally. Very strange behaviour. I can't get the hyperthreading to work. Can anyone help please?