A hardware failing. Start with the hard drive. Run a diagnostic to see if the drive is OK. Ultimate Boot CD has a Fujitsu utility if you cannot find it anywhere else.
My computer crashed severely this time. I could not run the repair disk or any command I tried in DOS did not fix anything. Luckily I retrieved the most important data using a linux live CD, but still my computer is not restored to working order.
I am trying to reinstall XP but there are unexpected problems. I already reinstalled XP using my recovery CD, and I was hoping to get back to factory settings but far from. I cannot activate the wireless network at all. The button right behind the keyboard is not working and neither will anything I do from "Control Panel" make something happen. Icons in the start menu seams some what streched too.
I tried to run Ubuntu as live CD to check if it would activate the wireless card but no such luck. I even tried to install it as a partition on the harddrive but when I ran the partition editor I got some alarming warnings. It was something like "filesystem on harddisk is rapidly deteriorating", and some action involving Windows I really didn't understand was suggested.
I then thought another clean installation of XP might fix the problem, but running the recovery CD I get all kinds of worrying warnings.
I seams I cannot reinstall XP yet another time, because the operating system is already managing the harddisk. I then tried the option of deleting the hard-drive for then to reinstall XP, but I get a warning that deleting the system-partition might prevent XP from booting and reinstalling. It might be deleting system-files like BIOS that really are difficult to reinstall.
It there any solution to this mess I am in? I really need my computer in working order. I am writing on an atique laptop from 2001 at the moment.
My computer is a Fujitsu Siemens Amilo laptop, L 1310 G. It originally came with XP SP2 and has been working just fine until the last few months. A couple of times it had problems booting, and this time nothing I did could fix it.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic