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Windows 7 Slow problem

tayyabq8 asked
Last Modified: 2012-05-11
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?
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