I have HP Pro book 6450b 64 bit, 4GB RAM, 2.4GHZ i 5, the laptop was working perfectly until i installed the three updates from windows update feature, one was windows defender update, which i believe messed up my system.
I tried to uninstalled my antivirus Macafee enterprise 8.7 even after that the laptop takes about 20 minutes to start and then works fine. I have restored my laptop through windows 7 restore image to an earlier date but still it take around 15 min to start and it get stuck any time during the work. Specially when i go the Device manager or try to view the logs of the system it get stuck and then i have to wait for about 10 minutes.
I did not try to repair the system yet however i try sfc /scannow but still the result is same?
Any thoughts?
Have you looked in the Task Manager in the Performance Tab to see if there is something the eats up the CPU?
If so then locate that Exe File - if you don't know it, google it and then make you decision.