Does not start Windows 7 in normal mode.

Most likely, something dies. But we need to test that, just not say. I was Takeo, what percent have died - first the PC was working fine then became off and perezagruzite, in the end just rebooted at startup. Gave to a friend, he put percent, and I percent currently. The problem disappeared for a couple of days, and then he appeared. And yet it was - started the system, everything seems to have worked, but no image fiction, and nothing happened. Lucky in SC said, the graphics card died. Changed, put everything back into the case - again the same trick. In the end it turned out that when tightened the screws Mat Board to the chassis, one of them, when pinched, did not allow the system to run. Can microtrading some Mat Board, maybe something else. In the end all it is not spinning and the computer worked fine.

PaXa_
There are two options, so I tried to recover it will do worse, and anything you see!.
1. (If you have integrated video card integrated) Make such actions.
Turn off the computer, change the plug connector from the monitor (Pulled from one socket and plug to the built-in none)
Preferably external to get for a while. (Don't forget, after checking to put everything in place and to verify the correctness)
Next, turn on the computer and look, so built-in is usually weaker, it is time you need to longer to load the OS.
If the PC booted fine and asked for reboot, so as found new hardware.
It's in the video card what to do next up to you, (Sometimes enough to remove all drivers-external vidyuhi not yet put in place)., After a reboot countdown.
That is shutdown and return vidyuhi to the starting point. (And then installing new drivers).
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2. In Safe mode, re-create the user., (Don't forget to copy and save the desired data)
You can just create a new user and try to login under the new user What to do with the old one, if it works you decide!.
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The greatest option is such a failure due to the graphics card.
For example vidyuhi dusty and bad starts, because it can start to deny driver and later in the return line.
Vidyuhi to get worse., Down to overheating on the motherboard, and the failure of the components responsible for the graphics card.
Still there are viruses that change the BIOS so that the wrong supply voltage and damage equipment.
Therefore, you need to identify the problem and if you choose to update the driver.

Mitsu Rju
While still in safe mode I through device Manager, disable the graphics card. Rebooted and I was able to log in normal mode (integrated feature). When I turn on the video card, again get the darkness and nothing more. Will reinstall the drivers.

Mitsu Rju
I also want to mention that until the underlying problem was another. The computer started off. Complained ASUS Anti-Surge. Turn off the PC, supposedly due to power surges. Write on the forums: either the problem is in the PSU or Anti-Surge carries a Blizzard. After reading a little more I noticed that many describe Anti-Surge as something unstable and sometimes false. I turned it off. A week and a half or so everything worked fine, then came my main problem. Maybe the problem is the power supply?
P. S. Reinstalling drivers did not help. Either I did something wrong, which can also be. But while the result is exactly 0%

PaXa_
Can contacts cleaned, memory\graphics card. Can Виндовс7 to reinstall, choose to install using the update, I used with XP was done.

PaXa_
You know no offense had the most problems with the same computers!
I do not mean that I do not want to help! Just once to get a grasp and to search names!
So the question is: do you Have a system unit or Laptop.,
Just a little decision can vary (be Different)
Suppose the Laptop: I can only give advice on problems encountered or know about them!
So recently I had a problem on one of laptops., Once again ASUS (Your original problem, laptop not a TIC off)
The decision turned out to be banal, coolers and not only very dusty., Had to download instructions on how to get him to understand! (The fact that many laptops have some specifics on disassembly)
I really don't like poking around inside the So-as not very versed in the guts!
But it was worth it laptop ceased to overheat and shut down.
The truth is there is another problem., Some models have ASUS, there are established tools that have become obsolete and are no longer supported and can therefore fail, and apparently in the settings of the BIOS there are predefined settings which switch off the laptop under different conditions!
1 Overheating
2 Setting the sleep timer
3 Not supported hardware
Unfortunately in the BIOS I usually do not agree well and can not say anything!
And what about the power supply it's simple., No matter you have a laptop or system unit important you have the Nose!
Sniff! if you smell an unpleasant odor, the type of melted wiring, then it may not only.
But all the same if you have a Computer-system-partially try to inspect with a flashlight.,
Look through the back cover, where the air comes out!
Two options:
First: On the subject of dust, if a lot is to disassemble and clean due to dust can overheat details
Second: (I had a case of the Computer constantly disconnected), the Reason was obvious!
The system unit must be at least two cooler (One on the PSU) and the other on the back or the side
So you need to look when as they revolve, and in what direction (They should go on the hood) If there are three one can involve in particular the side!
Personally, I have just one lower cooler was not working and that the Processor is overheated, in consequence of this shutdown of the computer.
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If the computer had not cleaned the brush does not hurt!