Apologize 4 the inconvenience, but windows did not start successfully. hardware or software change might have caused this, your computer stopped responding. windows xp

I have the same problem. you didn't install the BIOS flash from the Lenovo site, did you? There are atleast 20 people I found in the last 2 days that have the same problem.
First try the XP CD - repairing, reinstalling and those things.
If you can't get the windows to start any way possible, because you get the mesage the hdd isn't found, check the bios. if the bios doesn't have it either, your disc went dead. if the bios sees the disc, reset the BIOS.
if it still doesn't work, reset CMOS. to do that, cutt all the power supplies and then remove the cmos battery and put it back in after about 15 minutes (computers usually have a lot of condensators, so you need to wait for all the power to drain out). everything in bios and cmos will reset.
if that doesnt work either, post and we'll try on together.