hello,
anyone know about hp cq45 amd with ati chipset i have 2 laptops with same problem no display the first one flashes error code cpu init failed and the second flashes graphic problem changed the amd cpu but still same problem .also falshed the bios .what should be the ohms of ati graphic chip????

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repairs of laptops and selling of components

I am not sure, but looks north bridge problem - as result graphics and cpu fails.

You can try the same way diagnostics like with nvidia chips Just heat NB a for a 10-20 sec with hot air flow 300-400 degrees to be sure.

you right i have tried that but the same problem sometime it did work .i dont believe that these ati chips are also bad like the nvidia .
anyway will try again and let you now what the problem is .

thanks again

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repairs of laptops and selling of components