PC locks up with weird grinding sound when viewing certain websites

[jcmoor]

While watching certain website videos, the computer freezes and makes a grinding noise.  The mouse is frozen, the windows button. the keyboard, the only way to stop it is to hold in the

[itsmyname]

> grinding noise

A few possibilities:

1. one cable inside the computer is touching the blades of a spinning fan;
2. something inside the CD/DVD device is not properly "seated", and when the motor tries to spin what it expects to be a CD or DVD media, something else was inserted. Got any child in your house who pressed the "open the tray" button, and inserted a toy, and pressed the "close the tray" button, thinking that the CD/DVD device was a microwave oven?
3. your computer's disk-drive is failing. Compare to a needle running over the surface of a vinyl record, making noises. The disk-drive's read/write head is grinding against the recording-surfaces.
4. one of the fans inside the computer is way out of balance, and is "wobbling" as it spins.

Good luck.