Troubleshooting

Hi Friends

My name is Hariharan Posting some technical information which i learnt in my experience. The troubleshooting which i am posting here all are tested and verified.

1 HOW TO: Change the System/Boot Drive Letter in Windows 1. Make a full system backup of the computer and system state. 2. Log on as an Administrator. 3. Start Regedt32.exe. 4. Go to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices 5. Click MountedDevices. 6. On the Security menu, click Permissions. 7. Verify that Administrators have full control. Change this back when you are Finished with these steps. 8. Quit Regedt32.exe, and then start Regedit.exe. 9. Locate the following registry key: H KEY_LOCAL_MACHINE\SYSTEM\mounted devices 10. Find the drive letter you want to change to (new). Look for "\DosDevices\C:". 11. Right-click \dos devices\C:, and then click Rename. Note You must use Reg edit instead of Regedt32 to rename this registry key. 12. Rename it to an unused drive letter "\DosDevices\Z:". This frees up drive letter C. 13. Find the drive letter you want changed. Look for "\DosDevices\D:". 14. Right-click \DosDevices\D:, and then click Rename. 15. Rename it to the appropriate (new) drive letter "\DosDevices\C:". 16. Click the value for \DosDevices\Z:, click Rename, and then name it back to "\DosDevices\D:". 17. Quit Regedit, and then start Regedt32. 18. Change the permissions back to the previous setting for Administrators (this should probably be Read Only). 19. Restart the computer. ==================================================================== 2) Keyboard and Mouse Do Not Work When You Start Windows 1. Start the computer from the Windows XP CD-ROM. 2. At the Welcome to Setup screen, press R to repair a Windows XP installation By using the Recovery Console. 3. Type the number that corresponds to the Windows installation that you want to repair, and then press ENTER. For example, type 1 , and then press ENTER. 4. When you receive a prompt for a password, type the local Administrator password, and then press ENTER. 5. Type cd system32 , and then press ENTER. 6. Type cd config , and then press ENTER. The command prompt will be similar to the following (where Windows is the folder in which Windows is installed): C:\ Windows \System32\Config> 7. Type rename system system.old , and then press ENTER. 8. Perform the same process listed in step 7 for the software, security, sam, and default hives as well. 9. Type copy c :\ Windows \repair\system , and then press ENTER (where c is the drive on which Windows is installed, and where Windows is the folder in which Windows is installed). 10. Repeat the same process listed in step 9 for the software, security, sam, and default hives as well. ++========================================================================== 3) You can no longer access the CD drive or the DVD drive, or you receive an error message after you remove a CD recording program or a DVD recording program in Windows XP: "error code 31 Steps: Step 1: Start Registry Editor Click Start, click Run, type regedit , and then click OK. Registry Editor starts. Step 2: Delete the UpperFilters registry entry 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click upper filters. Note An upper filters.bak registry entry may also appear. To delete the UpperFilters registry entry, you must click upper filters and not upper filters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the UpperFilters registry entry: Are you sure you want to delete this value? The UpperFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey. Note Do not exit Registry Editor. You must have this program for the next step. Step 3: Delete the LowerFilters registry entry 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click LowerFilters. Note An LowerFilters.bak registry entry may also appear. To delete the LowerFilters registry entry, you must click LowerFilters and not LowerFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the LowerFilters registry entry: Are you sure you want to delete this value? The LowerFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey. 8. Exit Registry Editor. Step 4: Restart the computer If a CD recording program no longer works after you restart the computer, you must reinstall the CD recording program. ======================================================================= 4) How to install and configure Bluetooth devices in Windows XP Service Pack 2 1. Click Start, click Run, type bthprops.cpl , and then click OK. 2. In Bluetooth Settings, click Add. 3. In the Add Bluetooth Device Wizard, click to select the My device is set up and ready to be found check box, and then click Next. Note You cannot click Next until you click to select the My device is set up and ready to be found box. A device that has discovery turned off cannot be detected during a search. When you click Next, your computer searches for any discoverable devices that are in range. When the search is complete, the devices appear in the wizard. 4. Select a device to add, and then click Next. After you select the device to add, you can enter a passkey for the device. A passkey is a code that is used to control access to a device. Using a passkey may help improve the security of your connection. However, the device that you add may not require a passkey. Steps to take on the device When you have completed the steps on your computer, enter the passkey on the Bluetooth device. If the device is another computer, this computer displays a message that indicates that you are requesting a connection. Follow these steps on the computer that you are adding as a Bluetooth device: 1. Click in the message that indicates that you are requesting a connection. The Add Bluetooth Device Wizard starts and provides a field for entering the passkey. 2. Enter the passkey. You may also choose to have a passkey generated for you. When the passkey is verified, the connection is complete. The device is now visible on your computer. If the device is another computer, its computer name is visible on the first computer. On the last page of the Add Bluetooth Device Wizard, you can turn discovery off on the computer that you add as a device. By default, the option to turn discovery off is selected so that the computer does not remain discoverable at all times. =================================================================================== 5) You receive an "Internet Explorer has encountered a problem and needs to close . Remove Smart Tags Support for Internet Explorer 1. Close all open Internet Explorer windows. 2. In Control Panel, start the Add or Remove Programs tool (or the Add/Remove Programs tool). 3. Click Smart tags support for Microsoft Internet Explorer, and then click Change/Remove (or click Add/Remove). Disable Smart Tags in Internet Explorer 1. Start Internet Explorer. 2. On the Tools menu, click Internet Options. 3. On the Advanced tab, click to clear the Enable smart tags check box. 4. Click OK, and then restart Internet Explorer. ================================================================================ 6)How to copy data from a corrupted user profile to a new profile Create a New User Profile in Windows XP Professional 1. Log on as the Administrator or as a user with administrator credentials. 2. Click Start, and then click Control Panel. 3. Click User Accounts. 4. Click the Advanced tab, and then click Advanced. 5. In the left pane, click the Users folder. 6. On the Action menu, click New User. 7. Enter the appropriate user information, and then click Create. Create a New User Profile in Windows XP Home Edition 1. Log on as the Administrator or as a user with administrator credentials. 2. Click Start, and then click Control Panel. 3. Click User Accounts. 4. Under Pick a task, click Create a new account. 5. Type a name for the user information, and then click Next. 6. Click an account type, and then click Create Account. Copy Files to the New User Profile 1. Log on as a user other than the user whose profile you are copying files to or from. 2. In Windows Explorer, click Tools, click Folder Options, click the View tab, click Show hidden files and folders, click to clear the Hide protected operating system files check box,and then click OK. 3. Locate the C :\Documents and Settings\ Old_Username folder, where C is the drive on which Windows XP is installed, and Old_Username is the name of the profile you want to copy user data from. =========================================================================================== 7) To cause the Hibernate button to appear when you click Turn Off Computer 1.Download and install the hotfix released by microsoft from the following link, Goto this link - www.tinyurl.com/y9x2qz Save the .zip file on to the desktop Double click to open the zip file and you can see two .exe files Double click on the first .exe file (WindowsXP-KB893056-x86-ENU) to install it Restart the computer. 2.Edit the Windows registry to enable the appearance of the Hibernate button, Click Start, click Run, type regedit, and then click OK. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Right-click Windows, point to New, and then click Key. In the New Key #1 box, type System, and then press ENTER. Right-click System, point to New, and then click Key. In the New Key #1 box, type Shutdown, and then press ENTER. Right-click Shutdown, point to New, and then click DWORD Value. In the New Value # 1 box, type ShowHibernateButton, and then press ENTER. Right-click ShowHibernateButton, and then click Modify. In the Value data box, type 1, leave the default Hexadecimal option selected, and then click OK. Quit Registry Editor. Need not to restart the computer, and you can find the hibernate button will appear when you click on Turn Off Computer. ================================================================================================ • • =======================================================================================