Where did you get Win7? If you burned the DVD, confirm the ISO integrity and burn another using ImgBurn at 4x speed with Verify. Next try writing ISO to flash stick using this tool with Win7 in dropdown:If it's retail Win7, try writing DVD to flash stick using UltraISO: on File tab select Open DVD, on Bootable tab select Write Disk Image, Format, Write.
If your Windows 7 install does not include Service Pack 1, be sure to install Windows 7 Service Pack 1 first. To install the “Convenience Rollup,” you will need to install a prerequisite patch first.
Boot under USB or HD's.Is there a newer BIOS update on computer or mobo Support Downloads webpage? If not, Clear the CMOS:While in BIOS setup check SATA controller setting. Set to AHCI to try install first, then IDE if necessary.Test the HD using maker's diag/repair extended CD scan:. Use same CD to wipe the HD.Create and format a partition using Diskpart or bootable partition manager, then mark it Active to try install.Test your RAM.
Similar help and support threadsThreadForumI was unable to install January and March, 2017 Security Rollups KB3212646, KB4012215. I am able to install other updates. I have followed a number of repair strategies (can't recall exactly) over the last 2 months and have had no success.