How To Reset Enviornment Variables?

[redmagic]

For some reason my %WINDIR% environment variable got deleted, I really have no idea why or how. Due to this, I can't open any programs aside from cmd and a few others to replace the variable. I tried resetting in the command line but it would not save probably due to the fact that I was not running it in administrator which I can't do either. Are there any ways to fix this or am I going to have to do a system repair? (I can't seem to run the system restore program either, so that is out of the question.

Thanks

 

[bgunner]

First you will need administrator privileges. If you can't access this then a restore from the installation disk or re-installation is your only options.

 

[redmagic]

First you will need administrator privileges. If you can't access this then a restore from the installation disk or re-installation is your only options.

Do you mean the ability to open files with "run as admin" or just have an administrator account (which I am).

 

[bgunner]

can you bring up the command window as administrator? If not then you are most likely out of luck.

EDIT: if you can access command window as administrator, type this and see if it replaces the files. "sfc scannow" without quotes.

 

[redmagic]

can you bring up the command window as administrator? If not then you are most likely out of luck.

EDIT: if you can access command window as administrator, type this and see if it replaces the files. "sfc scannow" without quotes.

Alright, it seems I can not run the program as admin. What should I do now then? I booted into one of the system repair disks and tried to use a system restore point but unfortunately it did not work.

 

[redmagic]

Okay, I was able to re add the %windir% variable in Safe Mode using the setx command (setx windir %SYSTEMROOT%), but most things still do not work. I still can't open any control panel programs or most of anything really. Should I just reinstall Windows or is there anything else I can do.