i did format the partition on which was the xp installed.But i want to ask , i did a new install , but after all the program that i install was trying to be running in 16bit program prompting a c:/ box like DOS, (coreldraw suite 11 and 12,etc)
and the CD drive try to be selecting the varouis cd i put in. could it be possible that if the cd drive is faulty it might have done a wrong installation . too when xp start all the startup program are to running like 16 bit and refuse to open when i do click on them .too when i restart the machine it wont run
should i change my cd dive and do a new installation of xp? i try solve the problem with registry mechanic 3.0 but after i refuse to run againthe soft , i have to dsinstall it could it be a boot virus ?

OK...? Could you be a little more specific? You say that the programs run in 16bit mode, or is it that you CD drive does not want to work?

yes the program that i install do run in 16 bit showing a dos blak windows and after nothing , and the cd drive too some time choose the cd and does not complete the instalation of software.
when i start XP it give me this error '' THE PROGRAM COULD NOT RUN ,BECAUSE BAD SECTOR DAMAGED ON YOUR HARD DRIVE OR VIRUS", i do have Viruscan 2004 of mc afee.\thanks

Ok here is what I recomend....first make sure you do a full system virus scan (with the latest virus definitions) just to make sure there are no viruses.

Next to address the issue of possible bad sectors on the hard drive. Open a command prompt (go to Start, All Programs, Accessories, and then click Command Prompt) this should bring up a DOS-like screen. With the cursor blinking in the screen type the following EXACTLY: chkdsk C: /F
A bunch of words will scroll on the screen saying if you wish to run the diskcheck on restart; press the letter "Y" and press Enter. Close the command prompt screen. Then reboot the computer. When the computer reboots it will show a blue screen that will check your disk for errors. It may take some time (5-30 min) so be patient.

As for a CD drive not working make sure you have the most recent drivers for your drive (go to the drive's manufature's web site). It also could mean that you have a failing CD-ROM drive. But it sounds like you reinstalled Windows XP, right? If so, it is probably the drivers for the CD drive.

Another thing, what program is it that runs in a 16bit mode? Some older software will not run on Windows XP. If I knew what the name of the software you are trying to run is, I may be of more help.

Why did you format the drive in the first place? Are you installing a new drive? If not, it appears you have a bad hard drive. I would download the diagnostics form the hard drive manufacturers web site.

Also there are no drivers to install for a PC with windows XP, they are native.

ok i did find some vius w32/jeefo and w32/pate.b
lease could u tell me how use a pen drive as boot device ?since i do not have floppy drive