I used it primarily to get under the GPU chip where all the pins connect to the PCB, then found it was perfect for 'blowing clear' in under the RAM pins as well (when dirty I got pixelation/dots all over screen). I use a soft artists painting brush as well, soak it in 100% iso (from chemist that use it for developing films) and brush off easier accesable areas. Use the syringe full of iso' where you can't get with the brush...
I don't know if all makes are as vulnerable but Leadteks are VERY vulnerable to dirt/dust. The booting as a quadro had me baffled for days!, then I brushed of the BIOS legs/pins and it was A OK again. I read that you can mod the BIOS pins with a resitor to mod it to a quadro. Heaven knows why you would though!, it makes it slower in OpenGL games!. Only CAD programs benifit from the added quadro features...
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