Graphics Cards

[Realpowerhz1]

Last year i built my first pc and i used a 6650xt. For the first 2 months i used only hdmi and then i switched to displayport. Around january i cleaned the pc and when i turned it on the monitor couldn't receive the displayport signal. I tried with other cables and monitor but nothing. None of the 3 ports works. Do you have any idea on how to fix the problem?

[FunkZ]

If the DP ports were working prior to cleaning the PC and now not working even after swapping out cables and monitor then it sounds as though the cleaning may have damaged the graphics card.

By cleaning do you mean simply blowing dust out of the PC using compressed air? Was any hardware removed during the cleaning process? Did you disassemble the card for a re-paste as part of the cleaning?