Now we have XP bootable pen drive. We would install XP from this pen drive.Boot system from this pen drive. If system does not boot from pen drive check first bootable media setting in BIOS.Step1:- When system is booted up, and you see command prompt, type sys d: and hit enter if you see system transferred - you have luck, FAT32 file system is on drive C:, you will not lose your data- go to step 5- if any problem appears go to step 2Step2:-REMEMBER, you will loose all data from drive C:/> - when system is booted up from USB, your drive C: appears as D:Step3:- Type format d:/q/s to format drive D:accept and when it is finished, go to step 5 ( you are lucky, you don't need to make partitions)otherwise go to step 4Step4:- Type fdisk and hit entercreate new partition ( after restart boot with pendrive in)go to step 3 and format the partitions and come back here :)type pqmagic and set your new partition active( physical drive 2, Advanced A, set Active - S, are you sure - Y, Exit - X )Step5:-Type nc and hit enter, and using Norton Commander, copy all files form pendrive to disk C: ( you can overwrite existing ones)Step6:-Restart Laptop without pen drive in it (it should start from hard drive)Step7:-Type cd i386 and hit enter (it will enter i386 folder)Step8:-Type winnt and hit enterStep9:-this will launch xp installation process and you can install xp as you do with cd.