[automatos]

yes i know , i did got into the boot menu and as i said there is no drive in there , is this related to the deleted regisrty file ?? if yes is it possible to find and replace that file ???

[Blazkowicz]

It seems you don't understand.
If BIOS can't see the drive, then windows can't.
And a registry key is IN windows.

BIOS -> Windows
And not Windows -> BIOS

[automatos]

ok i understood that, so u suggest that my prob now became hardware and not software right ??

[Blazkowicz]

Yes, problem lies in hardware.

EDIT: You may try to load Fail-Safe settings in BIOS, but i doubt that adapter is maybe only disabled.

[automatos]

and how u explain that the problem caused after installing DT , and now became hardware problem ??? how do i load fail safe settings in BIOS ??

[Blazkowicz]

Just bad timing. It would be the same if you would stop at a traffic light with your car and then the engine would blow up. You can't blame the traffic light for this issue.

On the right somewhere (depends on which BIOS) is the option to load Fail-Safe settings.

[automatos]

i had a problem with some drivers on my graphic card and i had to get in safe mode couple of times , after i restarted normally the pc , the missing cd/ dvd drive just apperead from nowhere...
anyway thx for the help Blazkowicz

[Blazkowicz]

Then somehow it seems you haven't checked the BIOS correctly as graphic drivers don't mess with BIOS or you have a very strange BIOS.
Anyway, glad it is working.