This might cause because of any one below
1. If service CLIENT FOR NETWARE NETWORKS is running along with ur TCP/IP in network connections .....in this case simply do uninstall this service from network connection properties..........
2. If any of files related to winlogon most propably files like MrvGINA.dll replaced by new drivers/softwares raises this issue leading to not change the way of winlogon and this even causes problem in initiation of remote desktop connections...........
to solve this problem simply
go to registry and search MrvGINa.dll under
HKEY_LOCAL_MACHINE/SOFTWARE/MICROSOFT/WINDOWSNT/CURRENTVERSION/
WINLOGON path , then delete
and do a restart . .But be sure to take backup of registry before deleting it helps you..if not search here
HKEY_CURRENT_USER/SOFTWARE/MICROSOFT/WINDOWSNT/WINLOGON
path, then delete it, reboot your PC and enjoy!
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Tuesday, May 22, 2007
Sunday, May 6, 2007
DDR –DDR2-DDR3-GDDR2&3 RAMs
RAM memory is also used on video cards to make the video memory circuit. Until recently the video memory used the exact same technology as the system RAM memory that is installed on the motherboard. High-end video cards, however, needed memory chips faster than the ones used on the PC. So the manufacturers decided to go for DDR2 and DDR3 technologies.
DDR2 and DDR3 memories used on video card have different characteristics than the DDR2 and DDR3 memories used on the PC – especially the voltage. That’s the reason they are called GDDR2 and GDDR3 (the “G” comes from “Graphics”).
In our DDR2 Memory Tutorial we explained the differences between DDR and DDR2 memories. As we mentioned there, one of the main differences is the voltage: while DDR works at 2.5 V, DDR2 works at 1.8 V. This leads to a lower power consumption and less heat.
GDDR2 memories continue to work at 2.5 V. Since they run at higher clock rates compared to DDR memories, they generate more heat. This is the reason why only a few video cards used GDDR2 memories – only GeForce FX 5700 Ultra and GeForce FX 5800 Ultra used this kind of memory. Shortly after GeForce FX 5700 Ultra was released many video card manufacturers released a GeForce FX 5700 Ultra using GDDR3 memories, maybe to lower the heat and power consumption effects.GDDR3 memories can work at 2.0 V (Samsung chips) or at 1.8 V (chips from other manufacturers), solving the heat problem. This is the reason why this kind of memory is used by high-end video cards.
DDR3 memories are not released to PCs yet, but they will probably work at 1.5 V, being different from GDDR3 memories.Physically speaking, both GDDR2 and GDDR3 use BGA (Ball Grid Array) packaging, the same used by DDR2 memories, as you can see on the figures. It is impossible to visually detect whether a memory chip is GDDR2 or GDDR3
DDR2 and DDR3 memories used on video card have different characteristics than the DDR2 and DDR3 memories used on the PC – especially the voltage. That’s the reason they are called GDDR2 and GDDR3 (the “G” comes from “Graphics”).
In our DDR2 Memory Tutorial we explained the differences between DDR and DDR2 memories. As we mentioned there, one of the main differences is the voltage: while DDR works at 2.5 V, DDR2 works at 1.8 V. This leads to a lower power consumption and less heat.
GDDR2 memories continue to work at 2.5 V. Since they run at higher clock rates compared to DDR memories, they generate more heat. This is the reason why only a few video cards used GDDR2 memories – only GeForce FX 5700 Ultra and GeForce FX 5800 Ultra used this kind of memory. Shortly after GeForce FX 5700 Ultra was released many video card manufacturers released a GeForce FX 5700 Ultra using GDDR3 memories, maybe to lower the heat and power consumption effects.GDDR3 memories can work at 2.0 V (Samsung chips) or at 1.8 V (chips from other manufacturers), solving the heat problem. This is the reason why this kind of memory is used by high-end video cards.
DDR3 memories are not released to PCs yet, but they will probably work at 1.5 V, being different from GDDR3 memories.Physically speaking, both GDDR2 and GDDR3 use BGA (Ball Grid Array) packaging, the same used by DDR2 memories, as you can see on the figures. It is impossible to visually detect whether a memory chip is GDDR2 or GDDR3
Forcing Windows XP's Disk Cleanup to delete all temporary files
Takeaway: You may have found that Windows XP's Disk Cleanup utility misses a spot from time to time, retaining temporary files most recently accessed. Here's how to perform a clean sweep of your Windows XP files by forcing Disk Cleanup to get rid of all your temporary files. .
If you've ever run the Windows XP's Disk Cleanup utility, you probably discovered that your temporary files occupy a significant amount of space. You might select the Temporary Files check box in order to allow the Disk Cleanup utility to delete the files in the Temp folder, but the Disk Cleanup utility will not remove all of the files. The reason for this oddity is that the configuration for the Disk Cleanup utility does not allow deletion of files accessed in the last seven days.
By altering the LastAccess value in the registry, you can configure the Disk Cleanup utility to delete all the files in the Temp folder regardless of the last accessed date. Here's how:
1. Launch the Registry Editor (Regedit.exe).
2. Go to
3. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
Explorer\VolumeCaches\Temporary Files
.
4. Locate and double-click the LastAccess value.
5. When you see the Edit DWORD Value dialog box, change the Value Data setting from 7 to 0 and click OK.
6. To complete the operation, close the Registry Editor and restart Windows XP.
Changing the value to 0 will force the Disk Cleanup utility to delete all the files in the Temp folder every time that you select the Temporary Files check box.
Notes: Since editing the registry is risky, be sure you have a verified backup before saving any changes. This tip applies to both Windows XP Home and Windows XP Professional.
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If you've ever run the Windows XP's Disk Cleanup utility, you probably discovered that your temporary files occupy a significant amount of space. You might select the Temporary Files check box in order to allow the Disk Cleanup utility to delete the files in the Temp folder, but the Disk Cleanup utility will not remove all of the files. The reason for this oddity is that the configuration for the Disk Cleanup utility does not allow deletion of files accessed in the last seven days.
By altering the LastAccess value in the registry, you can configure the Disk Cleanup utility to delete all the files in the Temp folder regardless of the last accessed date. Here's how:
1. Launch the Registry Editor (Regedit.exe).
2. Go to
3. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
Explorer\VolumeCaches\Temporary Files
.
4. Locate and double-click the LastAccess value.
5. When you see the Edit DWORD Value dialog box, change the Value Data setting from 7 to 0 and click OK.
6. To complete the operation, close the Registry Editor and restart Windows XP.
Changing the value to 0 will force the Disk Cleanup utility to delete all the files in the Temp folder every time that you select the Temporary Files check box.
Notes: Since editing the registry is risky, be sure you have a verified backup before saving any changes. This tip applies to both Windows XP Home and Windows XP Professional.
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Check out the Windows XP archive, and catch up on our most recent Windows XP tips.
Stay on top of the latest XP tips and tricks with our free Windows XP newsletter, delivered each Thursday. Automatically sign up today!
Viewing non-present devices in Windows XP's Device Manager
Takeaway: Find out how Windows XP's Device Manager can help you track down non-present devices, which may still cause problems even though they're not physically attached to your machine.
When troubleshooting driver problems in Windows XP, one of the first places you may look is Device Manager, which provides detailed information about every piece of installed system hardware. In light of devices such as removable USB drives becoming more and more common, you may need information about devices that are not currently connected; Device Manager recognizes these as non-present devices. Here's how to get information about these devices:
1. Go to Start, right-click My Computer, and select Properties.
2. In the System Properties dialog box, select the Advanced tab and click the Environment Variables button.
3. In the Environment Variables dialog box, locate the System Variables panel and click New.
4. In the New System Variable dialog box, type DEVMGR_SHOW_NONPRESENT_DEVICES in the Variable Name text box and type 1 in the Variable Value text box.
5. Click OK twice.
6. To view the non-present devices, go to Start, right-click My Computer, and select Manage.
7. Click Device Manager, pull down the View menu, and select Show Hidden Devices.
Note: This tip applies to both Windows XP Home and Windows XP Professional.
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Check out the Windows XP archive, and catch up on our most recent Windows XP tips.
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When troubleshooting driver problems in Windows XP, one of the first places you may look is Device Manager, which provides detailed information about every piece of installed system hardware. In light of devices such as removable USB drives becoming more and more common, you may need information about devices that are not currently connected; Device Manager recognizes these as non-present devices. Here's how to get information about these devices:
1. Go to Start, right-click My Computer, and select Properties.
2. In the System Properties dialog box, select the Advanced tab and click the Environment Variables button.
3. In the Environment Variables dialog box, locate the System Variables panel and click New.
4. In the New System Variable dialog box, type DEVMGR_SHOW_NONPRESENT_DEVICES in the Variable Name text box and type 1 in the Variable Value text box.
5. Click OK twice.
6. To view the non-present devices, go to Start, right-click My Computer, and select Manage.
7. Click Device Manager, pull down the View menu, and select Show Hidden Devices.
Note: This tip applies to both Windows XP Home and Windows XP Professional.
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Check out the Windows XP archive, and catch up on our most recent Windows XP tips.
Stay on top of the latest XP tips and tricks with our free Windows XP newsletter, delivered each Thursday. Automatically sign up today!
Launching remote desktop from the command line in Windows XP Pro
Takeaway: Remote desktop allows you to configure and connect to another computer running Windows XP Pro. Here's what you need to know about the remote desktop connection dialog box, including a few parameters you're most likely to encounter.
The Windows XP remote desktop connection dialog box provides you with everything that you need to configure and connect to another computer running Windows XP Pro. You can use the Save As button on the Connection Settings panel to save all your connection settings as an RDP file. Then, you can launch and connect to a remote computer simply by double-clicking the RDP file.
You can also script a remote desktop connection, as Windows XP's remote desktop connection has an executable file that can accept command line parameters and be run from a batch file. The remote desktop connection executable file is MSTSC.EXE, and the following are some of the most common parameters:
· /v:
· /f--starts the connection in a full screen.
· /w:
· /h:
For example, to remotely connect to a computer named Kaltec in a 640 x 480 remote desktop screen, you would use the following command:mstsc /v: Kaltec /w:640 /h:480
You can type this command line in the Run dialog box, as well as use it in a batch file.
Note: This tip applies only to Windows XP Professional.
Launch System Restore from a command prompt in Windows XP
Takeaway: It's not unusual to use System Restore to fix strange Windows XP system behavior—but depending on how damaged your system seems to be, you may need to call for more advanced measures. Here's how to launch System Restore from a command prompt.
If your Windows XP system begins acting strange, a typical fix is to use System Restore to remove any system changes made since the last time you created a Restore Point. However, what if the problem is so bad that you can't start Windows XP normally, or even start the system in Safe Mode?
The good news is you can run System Restore from a command prompt. Here's how:
1. Restart your computer and press [F8] during the initial startup.
2. When you see the Windows Advanced Options Menu, select the Safe Mode with a Command Prompt option.
3. Select the Windows XP operating system.
4. Log on to your computer with an administrator account or with an account that has administrator credentials.
5. Type the following command at a command prompt:
C:\windows\system32\restore\rstrui.exe
When you see the System Restore window, the graphics may look odd, but you can still follow the onscreen instructions to restore your computer to an earlier state.
Note: This tip applies to both Windows XP Home and Windows XP Professional.
If your Windows XP system begins acting strange, a typical fix is to use System Restore to remove any system changes made since the last time you created a Restore Point. However, what if the problem is so bad that you can't start Windows XP normally, or even start the system in Safe Mode?
The good news is you can run System Restore from a command prompt. Here's how:
1. Restart your computer and press [F8] during the initial startup.
2. When you see the Windows Advanced Options Menu, select the Safe Mode with a Command Prompt option.
3. Select the Windows XP operating system.
4. Log on to your computer with an administrator account or with an account that has administrator credentials.
5. Type the following command at a command prompt:
C:\windows\system32\restore\rstrui.exe
When you see the System Restore window, the graphics may look odd, but you can still follow the onscreen instructions to restore your computer to an earlier state.
Note: This tip applies to both Windows XP Home and Windows XP Professional.
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