I have AMD Athlon ii x4 620 it has four cores I enabled all of them but I was just checking to disable some cores and see if it increases performance and I switched to 2 cores using Msconfig and now when I tried to enable the 4 cores. there are no more cores please help me
Thanks for posting back with the solution as it could be helpful to others.
it’s solved now
1.i checked the box of debug and PCI lock in Msconfig advanced
2.i uninstalled all the processors from the device manager
3.restarted and it got fixed