How to backup registry?

Windows Vista

• Click the Start --> All Programs > Accessories > Run.
• In the Run dialog box, type 'regedit'
• Click OK.
• In the User Account Control window, click Continue.
• On the File menu, click Export.
• In the File name box, type a file name (sample.reg)
• select a location where you want to save the Registry Entries.
• Click Save.

Windows XP

• Click Start, click Run, type %SystemRoot%\system32\restore\rstrui.exe, and then click OK.
• On the Welcome to System Restore page, click Create a restore point, and then click Next .
• On the Create a Restore Point page, type a name for the restore point and then click Create
• After the restore point has been created, click Close.

Note If System Restore is turned off, an instruction will appear 'whether to turn on System Restore now'. Click Yes. Then, in the System Properties dialog box, click to clear the Turn off System Restore check box, click OK, and then repeat this step.

Selva, I cannot click and open drives in my computer. It asks for the programe to open this! . Help me!

http://www.softpedia.com/get/Antivirus/W32-Rajump-Removal-Tool.shtml

Click the above link.

Download w32-Rajump-Removal-Tool

Install the software & run

This may help you.

Note : Switch off "System restore option", before install and run

How to start the system using "System Restore to Restore" in Windows XP?

If Windows does not start, 

• Press restart  button
• Then press the F8 key when Windows begins to start.
  Windows Advanced Options menu will appear.
• Use the ARROW keys to select Last Known Good Configuration (your most recent settings that worked), 
• Press ENTER.
• If a boot menu appears, use the ARROW keys to select Microsoft Windows XP, and then press ENTER.

How to turn off or turn on Windows XP System Restore

1. Click Start.
2. Right-click My Computer, and then click Properties.
3. Click the System Restore tab.
4. Clear the "Turn off System Restore" or "Turn off System Restore on all drives" check box.
5. Click Apply, and then click OK.