Take the hard disk out, and stick it in the fridge. Meantime, order a new one and when it arrives, get busy getting Windows on your new hard disk.

Spend a tenner on ebay for a laptop USB hard disk box. When it arrives, have your 'new' computer running. Quickly get the cold disk into the USB box. Chances are if you've caught it early enough you may be able to recover most, if not all of your stuff.

Hard disks have bearing in them, which can fail - 'freezing' the drive normally shrinks it just enough to get it to run normally for a few minutes until it heats up again. It's a growing problem in modern laptops as they run so much hotter than they did years and years ago.