No lights, no sound, nothingAlmost always the power circuit or the mainboard; the drive sitting behind it is usually sound.Lab work
Blue screens, or nothing to boot fromA failing drive, or a damaged file system — every restart costs a little more.Lab work
Something got spilt into itDisconnect it from the mains straight away. Liquid tends to kill the machine and leave the files.Time matters
Something ticks or scrapes in thereThe mechanism is failing, and each extra minute under power takes more sectors with it.Time matters
Stuck looping on repair or update screensNormally software trouble on perfectly good hardware; the files come back regardless.Lab work
Posting it to us: post it tracked and fully insured to the intake lab, and the journey back is on us; ring first if you would like an engineer to check how it is packed before you seal the box. Every stage is set out on the
posting guide.