Hi,

I agree with the others.

I had an odd suggestion though...

Install Linux (I currently like Linux Mint), on the disk drive and see if it misbehaves. That way you can get rid of the Windows OS and the drivers.

Be sure to max out the screen resolution and refresh rate for the test. The reason for the maximum refresh rate (even with and LCD/LED display), is that the pixel clock is faster (makes it work harder, more heat), and you will best expose timing issues.

Put in a diagnostic mode that works on the maximum transfers into and out of the video controller chip/pixel buffer RAM.

By the way, you don't have gold-plated and tin-lead plated memory sockets/memory cards do you?

Ross
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In SI, a little termination and attention to layout goes a long way. In EMC, without SI, you'll spend 80% of the effort on the last 3dB.