We are facing the lot of issues with our application server here.Event Log error: 1508Windows was unable to load the registry.This is often caused by insufficient memory of insufficient security rights.Once we done Soft or Hard reboot..everything gets ok..BUT why this problem occurs very frequently..?Any valuable suggetions??We had login errors too...windows always loads with default profile and not with Domains...

Hi SyedTo resolve this problem, modify the registry to increase the PoolUsageMaximum value and the PagedPoolSize value. To do this, follow these steps: Click Start, click Run, type regedit, and then click OK. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management On the Edit menu, point to New, and then click DWORD Value. In the New Value #1 box, type PoolUsageMaximum, and then press ENTER. Right-click PoolUsageMaximum, and then click Modify. In the Value data box, type 60, click Decimal, and then click OK. If the PagedPoolSize registry entry exists, go to step 8. If the PagedPoolSize registry entry does not exist, create it. To do this, follow these steps: On the Edit menu, point to New, and then click DWORD Value. In the New Value #1 box, type PagedPoolSize, and then press ENTER. Right-click PagedPoolSize, and then click Modify. In the Value data box, type ffffffff, and then click OK. Exit Registry Editor, and then restart the computer. Refer URL : http://support.microsoft.com/default.aspx/kb/935649 Hope this helps!Deva

Thanks for your reply..We trid doing that and done successfully..Even though no proper luck and server got hung again today...When we call Dell..they suggested us to update firmware updates to the server....What do you suggest..??Is there any alternate solution to go forward int his issue??

Yes i would have to suggest the same. Please update the BIOS and firmware version on the server by your Dell Hardware Vendor.Deva..

As dell suggested..we installed the FIRMWARE updates. Today again server got hung and we have done hardboot to the server... Can somebody suggest me is there any other solution...? This problem really...suffering us here... Thanks to your valuable suggetions in advance...