"I went into the system"
"I put it back via the Compaq utility"
That's the same, or something different? The best, if not only, way to correct mistakes is undoing them with the original tool. The A: is hardwired in to the system, so to say; the drive-letter for a cd can be influenced, in later versions anyway (don't know about Windows 95).
I wouldn't be surprised if you had to solve this by going back to Compaqs restore CD.
Kees
I have a compaq armada laptop, running Windows 95. I thought I would try running Knoppix on it, but it would not boot from the cd. I went into system and set the cd drive to be A drive, and put the A (floppy) to Z.
Since, I cannot boot past the windows splash screen. I go to safe mode, none of the options takes me to anything that works, and when it cycles me back through the splash screen, even the safe mode locks.
I can get to DOS, and from there found the A drive no longer existed. I put that put back via the Compaq utility, and now I can see it in DOS. I still can't get into Windows though. Any suggestions would be appreciated!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic