Windows 7: i think my computers is broken

Windows
Problem: Shut down unexpectedly
Files that help describe the problem:
071513-21715-01.dmp
sysdata.xml
WERInternalMetadata.xml
Warning: If a virus or other security threat caused the problem, opening a copy of the files could harm your computer.

Windows
Problem: Video hardware error
Files that help describe the problem:
WD-20130715-1141.dmp
sysdata.xml
WERInternalMetadata.xml
Warning: If a virus or other security threat caused the problem, opening a copy of the files could harm your computer.

Windows
Problem: Video hardware error
Files that help describe the problem:
WD-20120711-1608.dmp
sysdata.xml
WERInternalMetadata.xml
Warning: If a virus or other security threat caused the problem, opening a copy of the files could harm your computer.

Windows
Problem: Video hardware error
Files that help describe the problem:
WD-20120709-1819.dmp
sysdata.xml
WERInternalMetadata.xml
Warning: If a virus or other security threat caused the problem, opening a copy of the files could harm your computer.

Windows
Problem: Video hardware error
Files that help describe the problem:
WD-20120712-1942.dmp
sysdata.xml
WERInternalMetadata.xml
Warning: If a virus or other security threat caused the problem, opening a copy of the files could harm your computer.

Hello Nicm78 and welcome to Seven Forums.

So your computer shut down unexpectedly and you seem to have some video hardware errors. Unfortunately, that leaves a lot of unanswered questions. Like:
- What were you doing when the computer shut down unexpectedly?
- Does your computer still boot (start up)?
- Did you have just that one unexpected shutdown or many?
- Are you still able to connect to the internet?
- Did you receive any specific error messages?
- Have you checked for malware by running a full scan with your installed antivirus?

If you still have those .dmp files it would help to see them.

Screenshots and Files - Upload and Post in Seven Forums

One of our Forum experts prepared this troubleshooting guide. It's a good starting point.

Troubleshooting Steps for Windows 7

If you cannot stay booted long enough to complete the steps above then work through these steps for Troubleshooting Windows 7 Failure to Boot