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I receive display error while switching on the computer (HP Pavilion dv6670ec).

The screen splits into 6 parts (6 same small displays within my screen)

The error appears just while starting the computer.

  1. I tried to reinstall graphic card drivers (NVidia 8400 GS), but received the error message, that it's not possible to install (current max resolution is just 800x600)

  2. I also tried external display (through VGA) - no response

  3. I tried system repair - no result

BIOS doesn't show any graphic card information. After system repair, I'm not able to see anything when logged in Windows (I see just initial process on the screen)

Any suggestions what could be the issue?

enter image description here

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So in the BIOS, the screen looks OK? it looks like you are using windows (please include the OS and version in your question), can you start in Safe Mode? does the problem still occur there? – terdon Mar 24 '13 at 13:55
The problem occures everywhere - also BIOS is splitted, all initial screens (HP initial screen also) are splitted. I'm running on Win7. – xtomeek Mar 24 '13 at 13:56
Umm if you see this problem in the BIOS, it sounds like a hardware thing. Sounds like you will have to take it to be fixed... – terdon Mar 24 '13 at 13:57
Do you think the graphic card could be burned out? – xtomeek Mar 24 '13 at 13:59
I swear the 8xxx series has the BEST failure modes. They had a design flaw, and the two of that family I had died differently. You're probably best off getting a new graphics card if you can – Journeyman Geek Mar 24 '13 at 14:41

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