Win 7 Upgrade 7100 to 7600

Hello, i have found it is possible to upgrade Windows 7 RC 7100 to Final version 7600 only changing Cversion file Located at the Dvd.

So i decied to try; since i have 2 partitions of windows 7 Rc 7100, i did it on the 40gb HDD first, everything worked just fine, the upgrade was successful.

but when i tried to update my 1tb HDD wich have 2 partitions, one for data and the other one for windows + instalations, my screen just turns black with an intermittent " - " at the left upper corner, this occurs at the last stage of the upgrade where files are transfered.

i know this wouldn`t happen with a clean instalation of windows, but i really don`t want to install all over again, i have made a lot of changes to the system + installations that i don`t want to lose and i don`t have enough space to backup all the data.

i would like to know if you could help me out with this problem, i have been thinking its maybe a problem with some driver, because i had the same issue months ago when i tried to update my Geforce Drivers, The screen turns black with the white dot at the corner, so i went back to my old driver.

lostsoul777 said:

Hello, i have found it is possible to upgrade Windows 7 RC 7100 to Final version 7600 only changing Cversion file Located at the Dvd.

So i decied to try; since i have 2 partitions of windows 7 Rc 7100, i did it on the 40gb HDD first, everything worked just fine, the upgrade was successful.

but when i tried to update my 1tb HDD wich have 2 partitions, one for data and the other one for windows + instalations, my screen just turns black with an intermittent " - " at the left upper corner, this occurs at the last stage of the upgrade where files are transfered.

i know this wouldn`t happen with a clean instalation of windows, but i really don`t want to install all over again, i have made a lot of changes to the system + installations that i don`t want to lose and i don`t have enough space to backup all the data.

i would like to know if you could help me out with this problem, i have been thinking its maybe a problem with some driver, because i had the same issue months ago when i tried to update my Geforce Drivers, The screen turns black with the white dot at the corner, so i went back to my old driver.

I would suspect you are on the right track with the video driver.Dl a fresh copy and install it in safe mode.

Check the logs located here:
C:\$WINDOWS.~BT\Sources\Panther\setuperr.log

C:\$WINDOWS.~BT\Sources\Panther\setupact.log
C:\$WINDOWS.~BT\Sources\Panther\miglog.xml
C:\$WINDOWS.~BT\Sources\Panther\setupapi\setupapi.dev.log
C:\$WINDOWS.~BT\Sources\Panther\setupapi\setupapi.app.log
C:\$WINDOWS.~BT\Sources\Panther\PreGatherPnPList.log
C:\$WINDOWS.~BT\Sources\Panther\PostGatherPnPList.log

The last entry should provide clue to what is causing failure. Likely video card driver. Either uninstall it, update or roll it back.

Thanks for fast response.

i didn`t disconnect the 40Gb HDD to upgrade the 1tb HDD because i didn`t need to disconnect the 1tb to upgrade the 40gb; DocBrown do u recommend me to disconnect the other HDD?

i checked the files gregrocker told me to, but i can`t fully understand the meaning of those files, i think the problem is some missing driver, but i don`t know wich one is it.

so maybe you could check those files:

in the meantime i`ll try to delete 3d drivers and upgrade in safe mode as zigzag3143 told me to.

I disconnected the 40 Gb HDD wich already have Windows 7 7600 and ran Registrybooster 2010 to clean up the system.

This time i had some progress, the last stage of intslation reached 50% without any black screen, this time the problem was the instalation froze.

this time i`ll try to ran Tuneup utility before upgrade.

if you have any other ideas, just let me know, thanks.

The only clean up utilities I would run is CCleaner (Run Cleaner and Registry tab) and Auslogics Defraggers - both state of the art apps which are used by many or most pro's.

If you are unable to in-place Upgrade, then wipe your HD using DBAN and format using Win7 DVD before installing. Clean Install with a Upgrade Windows 7 Version

Nothing seemed to work until 03/28/10 (just 1 day before Windows 7 expires xD) when i decided to remplace my 3d for the one in my other pc; the upgrade ran just fine.

i had some trouble after the upgrade with video drivers when i tried put back my 3d, but now everything it is working.

Thank you very much all you you for helping me out with this problem.