I updated BIOS via Lenovo System Update, version 1.23-1.12 and then installed Microsoft Office Lync 2010. Since then, the starting time increase very much. Sometimes, my laptop hangs and I have to shut down by hitting the power buttons. I'm using OS Win 7 64 bit. How can I downgrade to the previous BIOS version, or reupdate it (maybe the BIOS update process had some errors). System restore didn't remember the time of BIOS update.
Kindly uninstall Microsoft Office Lync 2010 and check the system works fine.
After this install the software again and remove the entry from Startup
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