What should I look for when buying a desktop PC?

Gill needs to replace an old Dell desktop and wants to know what she should know about them …

Can a Windows 8 hybrid PC replace a desktop, a laptop and a tablet?

Jack Schofield: Leon works from home, travels a lot and wants versatile hardware that also allows access to tablet apps such as Evernote

Windows 8: forget 100m licences ‘sold’, here’s how many PCs are running it

Microsoft's announcement that 100m Windows 8 licences have been 'sold' disguises how many PCs are actually running it. The answer: a lot less than that suggests. By Charles Arthur

Windows 8 to be redesigned by Microsoft as PC sales plummet

Biggest expectation is that update will revive start button familiar to users for 17 years before removal from Windows 8

How can I transfer files from my DOS laptop?

Jack Schofield: Roger Funeaux is using a DOS machine to run his relational databases, and takes backups on floppies. There must be a simpler way to transfer files …

How Microsoft got Windows revenue to go up despite PC sales going down

Charles Arthur: One clue is the Surface – which managed to hide the erosion that is eating away at the heart of one key Microsoft business

Microsoft to take on iPad Mini with new smaller tablets

Tech giant reveals plans for new touchscreen devices and Windows 8 'Blue' as revenue rise beats analysts' forecasts. By Charles Arthur

Can I downgrade from Windows 8 to Windows 7?

Ben's wife has a new Dell laptop running Microsoft Windows 8, and he's trying to downgrade it to Windows 7

PC business slumps for fourth quarter in a row

Analyst says Microsoft's Windows 8 launch has 'slowed the market', as slide in shipments points to dramatic shift. By Charles Arthur

Botnet fraud costs display advertisers $6m a month, security researchers say

'Chameleon' botnet falsely views billions of pages and adverts on about 200 sites owned by a small group of publishers. By Charles Arthur

Is it worth trying to save an old 320GB network drive?

A reader can't get his old 320GB network drive to work with Windows 8, and Iomega says it has no plans to update the software for his discontinued product. What should he do?