HT4628 My Mac mini has decided to continuously drop off my wifi network and is incredibly slow to open a web page. Wifi is working perfectly with other devices.

Hi my Mac mini will not stay on the network today and is slower than a pc to lad a web page.
I've followed various suggestions off the web and still have the same problem. 1 second the network is available and working slow and the next it says in network diagnostics that ISP has failed. The router is fine as I'm using an iPad and iPhone and all is working perfectly at +5 Mbps however when I try to open yahoo in safari it take about 5 minutes to open the page and then when I try to create a new mail I get the same Tim delay and then can't enter a send to address!
I've never managed to sort out email either but it not for a lack of trying about 30 different suggestions.
I'm fairly new to mac and am getting very very frustrated with not being able to solve these problems.
Can anyone please steer me towards a step by step or screen by screen resolution please please please help?

Please answer as many of the following questions as you can. You may already have answered some of them; in that case, there's no need to repeat the answers.
Restart your router and your broadband device, if they're separate. Any change?
If possible, connect to your router with an Ethernet cable and turn off Wi-Fi. Any difference?
Are any other devices on the network, and if so, are they the same?
If you can connect to more than one network, are they all the same?
Are all network applications affected, or only some? If only some, which ones?
Is networking always the same, or is the problem intermittent?
Disconnect all other devices from the network. Any change?
Boot in safe mode and test. Any difference?
If possible, turn off Bluetooth and disconnect any USB 3 devices. Any difference?

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Message was edited by: Pos

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Step 11
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Step 12
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Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

HT4628 My Mac mini has decided to continuously drop off my wifi network and is incredibly slow to open a web page. Wifi is working perfectly with other devices.

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