I believe that If you were to boot into a Linux Live CD or any other CD bootable OS environment on said server then you'll be able to perform steps 4 to 8 of the fix mentioned in the KB75956 entry you referenced.
If your unfamiliar with the Linux environment secured2K (Forum Moderator) has created a very good windows based bootable CD https://community.mcafee.com/thread/6923
I'm familiar with sercured2k cd great tool, will try with it and let you know
Noup... Secured2k went all the way to the end, scanned memory, hard disc... after that i have rebooted choosed Disable Driver Signature Enforcement, and same error: STOP 0x6B PROCESS1_INITIALIZATION_FAILED and BSOD
Sorry you didn't make it clear. Did you create the folder, copy the TMP files and rename the bootcat.cache file?
I absolutely couldn't do anything on this machine.
Maybe the procedure was wrong.
The 1st when BSOD appeared I wasn't sure that it's Mcafee's fault.
Then I found out a mcafee kb article... tried with: DISABLE DRIVER SIGNATURE ENFORCMENT and was able to log in to win7 x64.
Then I have uninstalled Mcafee Agent, Mcafee VirusScan, also ran MER tool to clean all the mcafee products, and after restart I was unable to come back to windows.
Even choosing F8 and all the possible things: repair, safe mode, last good know configuration, disable driver signature enformencent... nothing worked.
I have also put secured2k cd and booted, left all the analysis being completed but unable to go to OS after reboot.
I ended up angry and boot with linux cd, copy all the data to a usb disc and reinstalling win7 now.