ANSWER:

For the Question:

I use anothor method: Download runassrv, put it in System32, and run:

runassrv add /name:"SystemCmdService" /cmdline:"cmd" /type:InteractiveProcess

This will add a service called “SystemCmdService”. Start this service:

sc start SystemCmdService

A dialog will pop up (in the taskbar). Click “View message” and you will go to another screen with a cmd window running in System account and another dialog to come back.

Don’t forget to delete this service later:

sc delete SystemCmdService

For the Problem:

I see you just want to delete some files in the comments above.

The actual problem may be the access control of the files. There ARE certain files that even System cannot open.

Please try:

1. Login as Administrator, temporarily disable UAC;

2. Right click the file, select Properties, Security tab, Advanced.

3. First goto Owner tab, Edit, change the owner to you (Administrator), save.

4. Close and reopen Security tab, Advanced, change the access control so that you have Full control.

jingyu9575 from http://superuser.com/questions/597024