I have a Toshiba Satellite P20 laptop and I am experiencing booting problems. My laptop suddenly turned off while I was defragmenting drive C. Now when I turn it on it shows the Toshiba screen then a screen requesting to chose between normal starting of Windows, safe mode etc but whichever I chose I get the Windows XP screen then a blue screen and then the machine restarts and all over again. I would appreciate any help from you. Thank you.
I think you have a bad hard drive. You can test the hard drive with Hitachi drive fitness test utility; it should work fine with most laptop hard drives. This utility is free and I use it almost every day. Toshiba Satellite P20 doesn’t have a floppy drive, so you should download a CD image and burn it on CD. After that you boot the laptop from the CD by pressing F12 on laptop start up and choosing CD drive. It’s pretty easy to start the test and if you have any question you can download a user manual. If the hard drive fails the test, you’ll get a red window at the end. In this case you’ll have to replace the hard drive.