Windows Hangs on Welcome Screen After Logging int

Hi, My windows 7 hangs up after logging in. In safe mode with networking, it is running perfectly. I have had this problem intermittantly, and the last times I got a message that my video driver as stopped working and is recovering. My computer would work fine for about a month or so and then it would happen. I have downloaded latest drivers from nVidia, and have also disabled everything except Microsft items on Startup.

The errors I get in the event log is as follows :
DCOM got error "1084" attempting to start the service WSearch with arguments "" in order to run the server:
{7D096C5F-AC08-4F1F-BEB7-5C22C517CE39}


DCOM got error "1084" attempting to start the service ShellHWDetection with arguments "" in order to run the server:
{DD522ACC-F821-461A-A407-50B198B896DC}

DCOM got error "1084" attempting to start the service EventSystem with arguments "" in order to run the server:
{1BE1F766-5536-11D1-B726-00C04FB926AF}

The driver detected a controller error on \Device\Harddisk3\DR3.


The following boot-start or system-start driver(s) failed to load:
discache
spldr
Wanarpv6


The following boot-start or system-start driver(s) failed to load:
AsIO
AsUpIO
discache
spldr
Wanarpv6

Thanks so much for your help


I performed a clean boot by disabling everything except microsoft stuff at startup. The item I eliminated was adobe reader speed launcher. I can not see it in my programs or features so I can uninstall it. With it disabled..my computer stopped hanging.

Was not that. It worked for a while...now it is hanging again. Machine only works if everything is disabled except Microsoft.

Please help