Ah sorry yes the GPU might be in there somewhere but it’s more likely the RAM 
or CPU as the startup chime doesn’t sound, it’s a basic self-test which can’t 
complete without working CPU or RAM. 

I’ve seen many Macs not start up like that, then they’re fine after re-seating 
the RAM modules.

Regards

Sam

MacAmbulance Ltd.
Providing Affordable Mac/PC Support and Web Development

Sam Mullen
+44 (0)7747778022 <tel://+447747778022>
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> On 4 May 2018, at 17:33, Jason Davies <[email protected]> wrote:
> 
> On 4 May 2018, at 17:22, Sam - MacAmbulance wrote:
> 
> Easiest resolution would be RAM, then CPU, then RAM/CPU riser card, then 
> logic baord
> 
> Thanks -- and just to push your patience -- not the graphics card at all?
> 
> I'll pay you for your time to make sure I get the right part(s); if you need 
> the business get me off list!
> 
> cheers
> J
> 
> 
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