I lost my all toolbar from autocad 2007 & 2012 .. please help

I am using auto-cad 2007 on Saturday,suddenly my auto cad get fatal error and it closed, after that i reopen it but there's no toolbar in it. i re-installed it also but still same problem. i tried another version also but still no toolbar in it.

for your reference screenshot attached.

please help

Command: -TOOLBAR

Enter toolbar name or [ALL]: Standard

Enter an option [show/Hide/Left/Right/Top/Bottom/Float] : accept the default by pressing the Enter

The Standard toolbar should now be displayed on your screen.

after entering TOOLBAR command some error has come "Unable to open file "acad.cui""

Did you include the dash as well? It's -toolbar.

Did you try loading the acad.cui?

after following you steps nothing happen .

how can i load acad.cui ? please suggest

Use the CUILOAD command.

there is nothing in profile folder

Did you type CUILOAD at the command line? Yes or No? What happened next?

ya i types cuiload than new window appear which say to load acad.cui file but when i browse it to profile folder it empty

Sounds like you have a bad install. You can try a REPAIR of installation.

ya i have repair and re installed it also.. even i have installed another version but problem still here

AutoDesk has a multi-step procedure for uninstalling their software. Did you follow that procedure to the letter?

ya i have delete user files also by uninstallation process

That doesn't sound like you followed the complete procedure to me. Unless you do ever step of the process, in order, you are setting yourself up for failure.

beleive me i did.. again i am uninstalling it again

This is the procedure you should be following. Read it carefully. Follow it exactly.

http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-remove-all-Autodesk-products-from-a-Windows-system.html

When you do install AutoCAD create a Windows Restore point first then temporarily disable the UAC and your anti-virus program.

If the problem doesn't finally go away you may have to wipe your hard drive and start all over from scratch.

Where did you get your copies of AutoCAD 2007 and 2012?

thanks buddy i follow the step and re install it now its as earlier thanks a lot

can i use to different auto cad version in same PC. is it okay or it will create any problem

There should be no problem. I've had as many as five different versions on one computer. However, before installing the second version create a Windows Restore point.