Everyone must have seen the dreaded YouTube message 'an error has occurred, please try later' accompanied by a blank screen. I had this on a pc recently (Asrock G31M-GS Q9400) and it was driving me out of my tree. I tried IE reset, enable Javascript, clear cookies, Memtest, Intel cpu test, reinstall Windows - even got to the point of swapping hardware but no dice.
Then I saw a post on Google that said 'have you got speakers plugged in'. I plugged in some headphones, and voila - YouTube video. See pic lower right speaker icon

There must be something in the YouTube code that looks for speaker present. I have repeated this test on other pcs, and it seems to just apply to some not all mobos. A bit of a mystery.
edit - the pic is IE. IIRC Firefox had the same problem, but Chrome was unaffected by speaker present.
Then I saw a post on Google that said 'have you got speakers plugged in'. I plugged in some headphones, and voila - YouTube video. See pic lower right speaker icon

There must be something in the YouTube code that looks for speaker present. I have repeated this test on other pcs, and it seems to just apply to some not all mobos. A bit of a mystery.
edit - the pic is IE. IIRC Firefox had the same problem, but Chrome was unaffected by speaker present.
My Computer
At a glance
Windows 7 pro x64 SP1Intel i7-2600k o/c to 4.6GHz8GB Mushkin 1866MHzNvidia GTX 750 Ti 2GB
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- self build
- OS
- Windows 7 pro x64 SP1
- CPU
- Intel i7-2600k o/c to 4.6GHz
- Motherboard
- MSI Z68-GD80
- Memory
- 8GB Mushkin 1866MHz
- Graphics Card(s)
- Nvidia GTX 750 Ti 2GB
- Sound Card
- integrated
- Monitor(s) Displays
- Liyama ProLite 27"
- Screen Resolution
- 1920*1080 px
- Hard Drives
- Seagate 2TB
- PSU
- Coolermaster GX 750W
- Case
- Antec 300 case + 5 fans
- Cooling
- Dark Rock Pro
- Internet Speed
- 62Mbit down 18Mbit up
- Antivirus
- MSE
- Browser
- Firefox
- Other Info
- Blackgold BGT3650 Quad HD TV card. Also have various 3770 + 4770K render boxes.