White screen after starting the desktop computer

Original title: Windows 7 white after the start of desktop screen.

When windows starts my desktop appears for 5 seconds and then the screen become white. I can't do any of that except the computer restarts.  When I do this, white screen closes and I see my office, but which also closes and the system restarts with the same question.   It seems that something is loading right after my office that does not... I can't access to my office to see what is on... Any thoughts on how I can fix this, other than a system restore?

I have a solution

First of all causes of white screen most of the files exe as spyware or viruses is the best way to solve this boot

on winpe CD or DVD from winpe, the research of malicious software which load at startup

If you don't know what file is it tries to start the Task Manager when connecting

to do this, go to system32 and then make a copy of cmd.exe and rename the copy sethc.exe and replace the current sethc after this restart let it connect normally, then pass the user pressing a win + l and then press SHIFT 5 times then a command prompt should appear then type taskmgr.exe and then find the process and kill it and remove via msconfig or winpe sorry for my bad English

Tags: Windows

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