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Whatever the reason – even if you’re the recipient of an office gag carried out by an unkind colleague – rotating your screen 90° is an easy task, and here we’ve covered a couple of ways to do it. If you’re running Windows 7 or 8, you may be able to quickly rotate your screen 90°, 180° or 270° at any time by pressing three keys.Simply hold down Control + Alt and then select the arrow key for which way you want your laptop or PC screen to face.Your monitor will then go briefly go blank and will return in a few seconds facing a different orientation. To restore this back to the traditional settings, press Control + Alt + the up arrow.If this doesn’t work, you’ll need to use one of the methods below. Another way to rotate your screen is to right click the Windows desktop and select Screen Resolution from the dropdown menu that appears. Changing the screen orientation via Control Panel is equally simple. Press the Windows key and type in “Screen Resolution” then press enter.

Alternatively, if you’re using Windows 7, you can click Start Control Panel Display Screen Resolution.From here select the monitor that you wish to rotate from the Display drop-down box and then finally select Portrait or Landscape in the Orientation field. You can also rotate a display using your graphics card’s control panel. (Note that there are too many different software suites to list the each one individually, so treat this as a general guide.)A shortcut to your graphics control panel can be found in a couple of places. Right-clicking the desktop and selecting the appropriate option will give you access to the Intel, Nvidia or AMD graphics card control panels, but the graphics drivers and software often add icons to the system tray on the right-hand side of your taskbar. Double-clicking these icons, or right-clicking thereon, will normally give access to the control panel, and also often a wide range of other options, too. Handily, some also permit you to right click their respective icons and select screen rotation from a dropdown menu.

Once the relevant control panels are open, you’ll need to peruse the ‘display’ or ‘desktop’ menus to find the rotation option for your monitor. The exact location varies from manufacturer to manufacturer, so a quick hunt around will soon locate the option you need.IBM Research has just announced a major breakthrough in chip manufacturing, producing the first working microchip on a 7nm process. IBM believes the research will result in a 50% increase in processing speeds, but it won’t be powering your laptop anytime soon; it’s likely to take some years for the technology to be refined for commercial use.The development is the work of a joint project between IBM Research, GlobalFoundries and the State University of New York, and has so far cost $3 billion (£1.9 billion) in research. The technology used in the microchip should usher in a range of superfast, compact processors, and continue Moore’s law for the near future.

“It’s a major step,” said Mukesh Khare, vice president of semiconductor technology at IBM Research. “We have been working on this technology for more than five years.”The power and efficiency of a microchip hinge on its manufacturing process. Generally, smaller technology means a chip can draw less power, and hence run faster without overheating. Intel current Core processors use minute, 14nm technology (14 billionths of a metre), and the company plans to shrink to 10nm next year. IBM’s latest test chip slashes the size of the transistors inside the chip to a scale that’s only three times wider than a strand of human DNA.To make the leap to 7nm, IBM and its research partners had to develop new manufacturing methods. The researchers used highly conductive silicon-germanium to carry the charge through the chip’s transistors, rather than regular silicon, and used extreme ultraviolet (EUV) lithography to inscribe the design – effectively using a very high-frequency laser to etch smaller patterns onto the chip’s surface than had previously been possible.

There’s something appealingly stripped-back about the design of the Aspire ES1-111M. Where some of Acer’s previous budget laptops and Chromebooks look and feel like My First Ultrabook, this one is all about the bare essentials. See also: what’s the best laptop you can buy in 2015?The base still feels lightweight, and there’s too much flex in the lid, but the overall construction is solid, and the matte textures and rubber feet mean it sits as well on the lap as on the desk. At just over 21mm thick and a weight of 1.29kg, the ES1-111M is light and portable.The screen is among the best we’ve seen on a budget laptop. Viewing angles could be wider, with colours fading once you move off-centre, but the brightness level of 273cd/m2 is impressive, even if it comes at the cost of darker greys and deep black.Images look crisp and punchy, while movies have plenty of impact. Colour accuracy is only average, but the ES1-111M still manages to cover 66.2% of the sRGB colour gamut; not bad by budget laptop standards.

The speakers have their plus points, with a little more space and clarity to the sound than you might expect, but as soon as the drums kick in or a big action scene commences you’ll be aware of their limitations – there’s next to no bass response.Ergonomics get off to a good start with the responsive touchpad, which is impressively broad for an 11.6in laptop, measuring 104mm across. Sadly, they take a nose dive when it comes to the keyboard. The feel is horrifically spongy, and there are some oddities in the layout, including tiny cursor keys that double as volume and brightness controls, and the fact that what appears to be the Return key is split between return and backspace functions. It isn’t ideal for getting work done.

Unusually, most of the connectivity is at the back, with HDMI and Gigabit Ethernet ports, plus one each of USB 2 and USB 3. There’s an SD card slot and a headphone socket on the left-hand side. The ports at the back are a bit cramped, though, and you might end up saying the same thing about the Acer’s eMMC storage. Only 11.2GB is available once Windows 8.1 with Bing, the recovery partition and Acer’s usual mountain of bloatware are accounted for. The latter includes some worthy apps, including older versions of CyberLink’s video and photo-editing packages, but elsewhere the selection is not so palatable.

Performance is good, with a Celeron N2840 CPU perfectly capable of handling any workload that isn’t too demanding. However, we noticed that while Acer ships the ES1-111M with 2GB of RAM as standard, our test sample shipped with 4GB. This means our figures will be slightly faster than the figures you’ll get from a retail machine.Luckily, this doesn’t affect its biggest selling point: battery life. Lasting for well over 13 hours of light use and over eight hours of heavy work, the ES1-111M keeps going when most other laptops – of any price – start to falter.It seems unfair to be too harsh on a laptop which costs a measly £175, but such a low price isn’t the headline-grabbing feature it once was. There are plenty of excellent rivals available for similar money – not least the HP Stream 11 – and the Acer just isn’t consistently good enough to win itself an award. If battery life is a prioroty, however, we wouldn’t rule it out completely.For a long time now, if you’ve been looking for the very best in slim, light laptops, you’ve had to turn – however reluctantly – to Apple’s MacBook family. With great battery life, top quality displays, zippy performance that doesn’t deteriorate over time and cutting edge design, its laptops have delivered every time. But the challenge from Windows portables is steadily growing, and Dell’s latest laptop – the Dell XPS 13 – aims to overtake Apple and pull ahead. See also: what are 2015’s best laptops?

From a design perspective, Dell has got it nailed. The laptop’s lid and base are finished in silky smooth aluminium that feels stiff enough to survive a nuclear strike – or at the very least being sat on on the sofa. The keyboard surround is clad in a sumptuous, soft-touch carbon-fibre effect plastic, and despite the bombproof build, the whole thing is very light, weighing a mere 1.27kg. That’s a smidge lighter than the MacBook Pro 13 with Retina display.It outdoes the Cupertino crew on practicality, too, with two long rubber feet stretching across the width of the underside of the chassis, giving it a grippy footing on a desk or your lap, and an LED battery capacity indicator on left edge, activated by pressing a small button.The keyboard is decent: it’s backlit, and has a light yet positive action, and the touchpad is pretty good, too. It’s accurate and, for those who prefer clicking to tapping, the integrated buttons work without fuss.

The real attraction of the XPS 13 is its so-called infinity touchscreen, which sees the bezel reduced to a width of a mere 5mm to the left, right and above the screen, producing a machine that, in terms of its overall size, feels more like an 11in laptop than a 13in one.Indeed, its dimensions of 304 x 200 x 20.7mm are closer to those of a MacBook Air 11in (300 x 192 x 17mm) than its real rival, the MacBook Pro 13. The latter is 14mm wider, 19mm deeper and 310g heavier than the Dell XPS 13. Dell has certainly done sterling work in squeezing the screen into less space. On first impression, the quality of the IPS panel used looks pretty good, too. The QHD+ resolution of 3,200 x 1,800 means everything looks incredibly sharp. (As always, though, do bear in mind that legacy software that hasn’t been optimised for high-DPI screens may be very fiddly, with miniscule buttons and tiny text.)http://www.dearbattery.co.uk/toshiba.html

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