At the top of the list of updates is a box "Select All" and that puts a checkmark in all the boxes at once. For the "Optional" ones you then say OK/apply at the bottom right side, once the boxes are checked. The screen then goes back to the main update page "critical" and you should see the TOTAL number of selected install items increase. I don't know of anyone that does this one at a time. You don't need all the language packs unless you speak certain other languages. Did you try and "Unhide" any hidden updates? Perhaps a necessary update got hidden and is preventing others from installing. (not the proper order of things) Can you take a screenshot and post the update page. Try using: http://www.techpowerup.com/tpucapture/ Also, what antivirus software are you using? Are any error codes still appearing? Was 7 installed from disk or download? It may be time for "repair". Example of error code 0×80070017 : http://windows-exe-errors.com/windows-error-code-0×80070017-solution/ Look at these: http://www.bing.com/search?q=0x8007...=BDKTMA&pc=BDT3&shash=&BDParam=0000&mkt=en-US http://www.bing.com/search?q=windows+install+error+code+80070017&src=IE-TopResult&FORM=IE10TR Some other ideas from the web::: Check HD for errors & check memory for issues that are causing corruption.http://support.microsoft.com/kb/956704 http://memtest86.com/download.htm V2.55 (vvv) http://www.hdtune.com/download.html I changed from compatible to AHCI and then in the expanding windows files step it starts to work. I also checked AHCI Wikipedia "Some operating systems, notably Windows Vista and Windows 7, do not configure themselves to load the AHCI driver upon boot if the drive controller was not in AHCI mode at the time of installation. This can cause failure to boot with an error message if the SATA controller is later switched to AHCI mode. For this reason, Intel recommends changing the drive controller to AHCI or RAID before installing an operating system. On Windows Vista and Windows 7, this can be fixed by booting in legacy mode and changing the registry." I agree with this one. sometimes the bios has reset to its default, especially when the battery empty or accidentally changed. It must need to change the SATA to COMPATIBILITY.. and when i tried to changed to SATA, again i got the blue screen, and when trying to re-install i got the error code : 0x80070017 play it with the setting (SATA, COMPATIBILITY, AHCI) to work to your hardware compatibly. wether using External drive for the installation or using a flash drive doesn't help with me. you don't even need to reinstall and can use the old OS as well by setting to correct mode. just went through the exact same thing, Then lost everything on the drive (not to worry, already backed up) After becoming thoroughly disgusted, I went to the Hard Drive Utilities set up in my BIOS, and proceeded to check my Hard Drive and the rest of my system. End result was a BAD MEMORY stick in DIMM B Slot 1. (In my Dell system it came with 2 512 MB sticks, and I added 2 1GB stick for a total of 3 GB, after time one of the 512's went bad, I removed it and Everything went back in like Easy Peasy. I would suggest that you CHECK your Memory Sticks...Who Knew RIGHT!