How to solve the blue screen in the process of upgrading the win7 Ultimate system in U disk

            1, in fact, the blue screen is already installed after the win7 system has been installed, I hope to start the old version of the operating system in the old windows, when you click into the old version of the windows operating system will appear blue screen error. In this case, the blue screen does not affect the Win7 operating system installed in the machine.
2, if the user has considered not applicable to the xp system, just delete the windows old folder stored in the system partition (this folder saves the system files of the previous XP operating system);
Note: When you delete the windows old folder, you may encounter interception. At this time, even if you use the administrator authority, you can't continue. Therefore, Xiaobian reminds you that you can use the file shredder or operate in windows pe. The deletion is completed in the system.
3, in order to avoid this blue screen situation after upgrading Win7 operating system, then when installing win7 system on XP operating system, it is recommended that you do not store both operating systems in one partition, should be newly built A partition and the newly installed Win7 operating system installed in this partition, it should be noted that the new system installation partition must be in ntfs format, if not, Win7 operating system will refuse to install.