need to installrecovery disk its asking for thewindows installation di

Hi,

Try pressing the F12 key as soon as the Acer logo appears when you first press the power button.

This should lead to a Boot Option menu. Change the boot order so that the DVD drive is the first option and the HDD is the second. If this doesn't work press F2 when the logo appears to enter the BIOS area. Navigate to find boot order options in there, alter as above, save the changes and proceed as shown below.

Place the 1st disc in the drive (hopefully they are numbered) and restart your laptop.

When it boots off the disc, wait for it to load and then follow the prompts. Try the repair option first as hopefully it can repair your OS installation (and therefore save all your data) rather than performing a new installation.