my screen goes black when I connect and when I try ctrl alt del it don't work

my computer of solid work for the 1 year I got it but not when he just started having problems when I try to connect normally, I sign, but then the screen goes black and all I see is a slider and I try Ctrl-alt-delete but an error msg appears saying: I can't get to the settings of Microsoft security I tried running a virus scan , but it was cancelled way quarter in I need help

Hello

Did you do any changes to the hardware or software on your computer before this problem?

See the methods:

Method 1:

Why my screen is black when I start Windows 7?

http://Windows.Microsoft.com/en-us/Windows7/why-is-my-screen-black-when-i-start-Windows-7

Registry warning

To do: Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base:

322756 (http://support.microsoft.com/kb/322756/ )

Back up the registry
http://Windows.Microsoft.com/en-us/Windows7/back-up-the-registry

See also:

Windows Vista and Windows 7 black screen on computer unlock

http://support.Microsoft.com/kb/2431700

Method 2:

Launch the virus in safe mode with network scan.

Step 1:

Start your computer in safe mode with network.

http://Windows.Microsoft.com/en-us/Windows7/start-your-computer-in-safe-mode

NOTE: see 3 from the link above, Advanced options boot (including safe mode).

http://Windows.Microsoft.com/en-us/Windows7/advanced-startup-options-including-safe-mode

Select Mode safe mode with networking.

Step 2:

I suggest you run an antivirus scan using the Microsoft Safety Scanner to confirm that your computer is free from any infection by the virus. Please find the link below.

http://www.Microsoft.com/security/scanner/en-us/default.aspx

Note: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

Note: The Microsoft Safety Scanner ends 10 days after being downloaded. To restart a scan with the latest definitions of anti-malware, download and run the Microsoft Safety Scanner again.

The Microsoft Safety Scanner is not a replacement for the use of antivirus software that offers continuous protection.

Hope the information is useful.

Tags: Windows

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