Pro tools LE won't run on laptop and XP

[crizdee]

Hello,

My pro tools 6.7LE/m box won't run on my 2.8ghz laptop!? it used to run fine with 6.4, but i have installed 6.7 from CD and i am getting error messages...

first error message says "audio processing is in conflict with other CPU tasks, try reducing the HW buffer size -9129" i reduce the buffer size! and then get this message.... "the operating system held off interupts far too long, try increasing the buffer size"

I have tried all buffer sizes and have tried DAE buffer size!!

This even happens with an empty song with no audio playing!!!!!!!

I have uninstalled from CD and installed again with no difference!! i desperately need to get this system to work!!!

any help would be appreciated.

Regards

Chris