My video and sound are skipping on my hp nx6125 all of a sudden my computer has gone really slow and my sound and video wont work properly

Usually this is due to heavy activity in the background such as malware/spyware & viruses. If your pc is slow just all of a sudden, then you mostly likely have this problem. Make sure you have the most recent Antivirus programs and that they are up to date and run a full scan. Download and run a anti spyware/malware program such as Malware Bytes or Spybot Search and Destroy. If you are using the free versions you have to remember to update them often and run as they only run automatically if you purchase. It is well worth the money to spend a little on setting it and forgetting it. After you ahve cleaned everything up try and play something and see if you have the same issue.

I have only had one instant where it was actually the hardware and that was in 2000.

Hope this helps Usually this is due to heavy activity in the background such as malware/spyware & viruses. If your pc is slow just all of a sudden, then you mostly likely have this problem. Make sure you have the most recent Antivirus programs and that they are up to date and run a full scan. Download and run a anti spyware/malware program such as Malware Bytes or Spybot Search and Destroy. If you are using the free versions you have to remember to update them often and run as they only run automatically if you purchase. It is well worth the money to spend a little on setting it and forgetting it. After you ahve cleaned everything up try and play something and see if you have the same issue.
I have only had one instant where it was actually the hardware and that was in 2000.
Hope this helps