|These tell you all about the various "beeps" - and what they mean...|
http://www.computerhope.com/beep.htm (this one covers all makes of bios...)
Suggest you read all of the above...!
And have you made any changes to the system physically at all before or since you started to have problems; installed RAM, changed any hardware etc.?
I get the impression you are fairly familiar/cogent with computers... but not entirely... And I feel you need to be really aware of options various and also any risks depending on what you decide to do in the end... Which is why again I ask you the following questions - and thus far you haven't answered them...?
What make and type is this computer - laptop or desktop/tower?
Are you happy to completely wipe and reconfigure the drive afresh; as in remove all partitions and then create new ones?
Also do you have everything of value copied off the drive?
You ask - "...but... what is going to happen if i delete the c partition,recreate it and then format it..."
Deleting and recreating the current c: partition may work out OK, and not cause you problems with the d: partition/drive... Simply reformatting c: again ought not to cause you problems. But in either approach it's wise to be aware of possibe issues that "might" result... which is why one ensures all data etc. is safely copied elsewhere beforehand?
How big is the current c: partition; and also the d: partition? and what is the file format of each?
Is the XP CD you have a full version (OEM or retail) or a Recovery CD?