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Answer : I had the same problem. This is what I found after a lot of searching: Later versions of Windows 10 do not allow you to set, save or change the TPM owner password by default. The password is generated by windows, used by windows to configure the TPM then discarded. That way nobody can tamper with the TPM after it has been activated. In effect, the owner password no longer exists. You can disable this security feature by changing a registry value, clearing the TPM and rebooting. After that, you will be able to set and change the TPM owner password. See this article: https://technet.microsoft.com/en-us/itpro/windows/keep-secure/change-the-tpm-owner-password?f=255&MSPPError=-2147217396 After reading the article, I decided to leave things as they are, with the new Windows default (i.e. no way to access or change TPM owner password). You only need the TPM owner password if the PC security is being centrally managed in an enterprise setup with the need for a security admin...

Answer : This turned out to be a very interesting question. There are lots of links out there on this topic but they are ambiguous in describing the difference/relationship between the two. Best description I've found of the hard drive configuration for a Windows OS is this one: http://www.ntfs.com/hard-disk-basics.htm. It appears that MBR and Partition Table are in the same sector on a drive. The MBR is "smaller" in that it is the very first thing on the drive, that then uses the partition table to continue the boot process to a specific OS. The two command options effectively fix different links in the boot chain: /fixmbr replaces the information and small executable that reads the partition table to find where the OS may be located. So this exists on any drive that has been formatted and effectively exists to read the next little bit on the hard drive that tells where the/an OS is supposed to be located. In essence, this is not necessarily a Windows-speci...

Answer : This is a common problem in all Lenovo laptops. I also have faced this problem so many times. For solving this please go to the link(link of official Lenovo's support site) and download latest bios setup and install it. It will update your bios and all will be all right. Download bios set for window 8.1 and install it. The manual also is given in PDF format. http://support.lenovo.com/in/hi/products/laptops-and-netbooks/lenovo-g-series-laptops/lenovo-g580-notebook Update: After this again the same problem happens with me but this time I already have latest BIOS version installed in my system and the Lenovo don't allow the installation of same or lower version of the BIOS in existing latest BIOS. So I stuck there and can not do anything. I also approached to the Lenovo service center but they are also helpless they suggest me to change the motherboard which cost me around 10000 INR.