If XP won’t start it may be due to a damaged boot sector or a missing or corrupt ntldr or ntdetect.com files.
To replace damaged ntldr and ntdetect.com you can copy fresh files from the XP CD using  the COPY command. Boot with the XP CD and enter the Recovery Console. At the Command Prompt type the following (where “X” is your CD-Rom drive letter) allowing the files  to overwrite the old  files
COPY X:\i386\NTLDR C:
COPY X:\i386\NTDETECT.COM C:
To repair a damaged Boot Sector at the command prompt …

The time may come that you’ll need to reinstall your Windows XP. It could happen. Maybe you’ll add a new motherboard or hard drive. Maybe you’ll get constant errors and problems that just won’t go away. Or perhaps you’re a neat freak who wants to rid yourself of clutter and start fresh with a clean operating system. If you do reinstall Windows XP, then you’ll need to re-activate it too—that is, unless you keep this tip handy.
See, the first time you activated XP it created a file called “wpa.dbl” that …

1. Insert Windows XP CD into your CD or DVD ROM.
2. Copy the DEPLOY.cab file from cd to your local hard disk. It is located at E:\SUPPORT\TOOLS (The drive latter E can be different depending on your CD ROM drive latter).
3. Extract that DEPLOY.cab file.
4. Open the DEPLOY folder and double-click on sysprep file.
5. A dialog box System Preparation Tool 2.0 appears. Click on OK button.
6. Another dialog box appears, set the shutdown mode to Reboot.
7. Click on Reseal button. It takes several minutes and then system is restarted.
8. …

STEP 1:- To begin with insert your copy of the Windows XP installation CD into the optical drive and copy the entire contents of the CD to a folder on your hard drive. Make sure the drive has at least 700 MB of the free space.
STEP 2:- Navigate to the folder ‘Support Tools‘ on the CD and Double click the file ‘Dploy.cab‘. Copy all the files to a folder on your hard drive. The reason for doing this is to extract ‘Windows Setup Manager‘ and the related help files …

Screen check is online tool, which help us to check screen in two terms tone and color.
For that they provide two strips from 1 to 100 with breaks to check contrast, brightness and color.

First, you should set the contrast on your monitor to the highest setting (i.e. 100).
Second, Adjust the brightness so the shape in the barely visible and background appears as a solid black (i.e. around 25 to 30). To adjust contrast and brightness ,use menu button on your screen , select , and use arrow buttons to …