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Download and install the recovery software. You can mount it to a USB or DVD with Microsoft’s USB/DVD download tool. Make sure you have your product key to hand. You can find this on a “certificate of authenticity” sticker located somewhere on your Windows 7 device. Windows 8 and 8.1 users usually have the product key embedded in firmware, so it should install without asking you for one.If you’ve just bought a new laptop or desktop with Windows 10 and you want to downgrade it to Windows 7 or Windows 8.1, you’re going to step into a little bit of trouble.While you’ll need to perform the same process as installing Windows 7 or Windows 8.1 from a clean install, your Windows 10 license isn’t valid for either of Microsoft’s previous OSes. In case you haven’t figured it out already, this means you’ll need to go and buy yourself a copy of either OS before you can begin to install them on your new Windows 10-optimised PC.

If your Wi-Fi connection is crawling along, the first question to ask is whether it’s really the network that’s to blame. The true culprit could be a specific program or device clogging up your network – perhaps a backup job beaming terabytes of data to your NAS box, or an infected device that’s been subsumed into a botnet, and is now, without your knowledge, flooding out malicious datagrams to destinations around the world. Or, alternatively, it could just be your kids watching Youtube. With free software such as Wireshark, you can inspect all the data packets on your network as they fly through the air, and easily discover whether one device is taking up more than its fair share of bandwidth. Your router’s web-based administration interface may also offer reports and logs: the way you access these will differ between models and manufacturers, but they’re well worth looking at since they’ll also include activity from wired clients.

For some, that sole USB-C port may crush the MacBook’s appeal, but it’s worth bearing in mind that the USB 3.1 (Gen 1) standard that Apple has employed is designed to defeat such limitations. A single cable is capable of transferring data at a rate of 5Gbits/sec, as well as up to 100W of power, so there’s no need to choose between hooking up a hard drive or charging your laptop.There are even some more pragmatic benefits to Apple’s decision. Using USB-C as a power connector opens up the possibility of topping up the MacBook’s battery from a portable USB charger, given a suitable adapter cable. Slowly but surely, though, an increasing number of USB-C hubs, adapters and peripherals are beginning to hit the market. Shell out £65 on Apple's own USB-C Digital AV or VGA Multiport Adapter and you get a full-sized USB 3 port, a USB-C passthrough and a VGA or HDMI socket depending on which model you choose.

Third-party manufacturers are increasingly getting in on the action, however. There are already a fair few reasonably-priced USB-C hubs on Amazon UK, many of which mimic the Apple official adapter for less than half the price. Suffice to say, the MacBook's limited connectivity is rapidly becoming less of an issue.For anyone who can afford a MacBook, the question of whether they actually need one will be met with a disinterested shrug: as a lust-inducing example of laptop design, there are few, if any, devices on the market able to engender the same kind of instant, irrational desire. Of course, there are practical concerns. The MacBook is simply not fast enough to replace a desktop or more powerful laptop for demanding users; and, depending on how you use your laptop, the connectivity may prove obstructive – for now, at least. At this price, I’d be sorely tempted the MacBook Pro 13in with Retina Display instead – and especially if this is going to be your sole laptop.

Several current router models also make it possible to assign a set amount of bandwidth to each device on the network. If you want to make sure that no one device is hogging your internet connection to download multi-gigabyte updates – or just stop your housemates from monopolising the bandwidth – then it's well worth checking through your Wi-Fi router's setup pages. "Don’t assume that you know about every device on your network." Don’t assume that you know about every device on your network: if your network is open, or has a guessable password, your neighbours or others could be leeching bandwidth and hoping you won’t notice. You can boot them off, or use your router’s QoS settings to prioritise the traffic that’s important to you.If all that sounds like too much hassle, try simply switching off your network-connected devices one by one, and keep checking network speed as you go. For obvious reasons, an online speed-tester isn’t the right tool for this, as results will be limited by the speed of your internet connection rather than your domestic wireless network. Don’t trust the wireless link speed reported by Windows either: this gives an idea of the theoretical throughput of your wireless connection, but if you’re interested in real-world performance, there’s no substitute for copying files back and forth between devices.

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Sometimes, though, the simplest troubleshooting methods are the best. For instance, if switching off a spare PC causes things to suddenly start zipping along, it suggests a little housekeeping may be all that’s needed to give your wireless network a boost. And if you have cordless phones in your house, then it may be worth making sure that they're not positioned directly next to your router, as these can often cause a huge amount of interference. There are plenty of other methods to speed up your Wi-Fi connection, though, and we'll explain the key methods over the next few pages.There are many reasons why people want to be a CEO of a startup, but a poor backhand isn’t usually one of them. Yet after a career that spanned stints as the head of Commodore UK and running games companies that produced massive hits such as Guitar Hero and Grand Theft Auto, Kelly Sumner realised retirement wasn’t for him.

Delve deeper into the numbers, and the Retina display continues to impress: a colour temperature of 6,683K doesn’t stray far from the 6,500K ideal, and the panel covers 93% of the sRGB colour gamut. Colour accuracy is good, too, with an average Delta E of 2.1 and a maximum deviation of 4.6.Backlighting is noticeably more even than on high-DPI rivals such as the Surface Pro 3 or Asus Transformer Book T300 Chi; there is a faint halo of backlight leakage around the panel’s edges, but it’s far less pronounced than on other slimline models.Apple MacBook 2015 performance and battery life The MacBook is the first Apple device to be powered by Intel’s Core M processors. The £1,049 model comes with a 1.1GHz Core M CPU and a 256GB SSD, while the £1,299 model ups the ante with a 1.2GHz Core M CPU and 512GB SSD. In either case, it’s possible to upgrade to a 1.3GHz Core M CPU for £200 and £120 respectively. Whichever specification you choose, though, the MacBook is equipped with 8GB of LPDDR3 RAM - there's no option to upgrade it.

Bafflingly, the 1.1GHz CPU in our review unit turned out to be a Core M-5Y31 – this is nominally a 900MHz processor that’s capable of boosting up to 2.4GHz. However, there’s good reason for this discrepancy: Intel allows manufacturers to increase or decrease the power consumption of its Core M chips to suit the cooling capabilities of each individual device. In this instance, Intel provides the option to increase the CPU’s TDP from 4.5W to 6W; a change that effectively increases the CPU’s base clock speed to the 1.1GHz figure quoted by Apple.That aside, the MacBook feels pretty sprightly in everyday use. The PCI Express SSD certainly helps a great deal here. With sequential read and write speeds of 777MB/sec and 461MB/sec respectively, application-load times and boot times are seriously swift. Yet the Core M CPU does its bit, too. Indeed, it's not until you push the MacBook with heavyweight photo- and video-editing duties that it starts to struggle.

That said, in Alphr's new benchmark suite, the MacBook’s CPU struggled to keep up with the faster Core M-5Y71 CPU in the Asus Transformer Book T300 Chi. That’s to be expected, though: the MacBook’s Core M-5Y31 only gives away 100MHz to the Core M-5Y71 at its base clock speed, but its maximum Turbo frequency is 500MHz lower. As a result, the MacBook was between 20% and 25% slower across the board, arriving at an overall result of 20 to the Asus’ 25.The MacBook’s passively cooled design works well, however. Silent operation is a given, but the cooling is surprisingly effective. After several hours of running the benchmarks, only the rearmost part of the base heated up substantially – to around 41˚C – while the majority of the metal underside became only warm rather than hot. Thankfully, sweaty knees aren’t the order of the day here.Apple claims nine hours of battery life from the MacBook, and happily that’s very close to the truth. With Wi-Fi on, I got through most of a working day of light use without having to reach for the power supply. It acquitted itself well in the 720p video-rundown test, too. With Wi-Fi off, and the screen calibrated to 120cd/m2, the MacBook lasted 7hrs 10mins.

If there's a downside to the MacBook's power-efficient Core M processor and fanless design, it's that GPU performance takes a severe hit. It's not that the integrated HD Graphics 5300 GPU is underpowered, but rather due to the constraints of the Core M's frugal power envelope. With little more than 5 or 6 watts of power to work with, there simply isn't the headroom (nor the thermal capacity) to simultaneously get the most out of both the CPU and integrated GPU cores.In GFXBench GL's suite of graphics benchmarks, all run in 1080p resolution, the MacBook produced average frame rates which were ~30% higher than the Cherry Trail Atom processor in the Microsoft Surface 3, and ~35% slower than the Intel HD Graphics 6000 GPU in the 13-inch MacBook Air.

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In terms of real-world gaming performance, you can all but forget about playing games at the MacBook's native screen resolution. Fire up recent titles such as BioShock Infinite, and you'll need to drop the resolution right down to 1,024 x 768 and reduce detail settings to minimum if playable framerates are the order of the day. It's safe to say that the MacBook is not a featherweight gaming machine.Perhaps the biggest compromise in the MacBook’s design is connectivity. When it comes to wireless, 802.11ac and Bluetooth 4 still make the cut, but physical connections are now limited to a single USB-C port and a headphone socket. That really is your lot.The MacBook relies on its single USB-C port for everything bar audio. The power supply charges the MacBook via a 2m, reversible USB-C cable, and should you want to connect a USB device – or a monitor or Ethernet cable for that matter – you have one option: buy one of Apple’s pricey adapters or seek out a third-party alternative.