I have lost my cd's and screen became gray i can not boot what should i do?

Hi all
i have lost my cd's and screen became gray i can not boot what should i do?
i have tried to reset Vram
tried to run safe boot
but nothing happends
i have a macbook pro core 2 duo 2GB ram 160 gb hard disk

Use the computer your on now to download and burn a ISO of PartedMagic to a cd.
In Windows 7 you can right click on the downloaded ISO and click burn to disk, other Windows versions use the free ImgBurn software.
In OS X you can burn the ISO using Disk Utility.
Hook up a external drive to the target Mac.
Stick the PartedMagic disk into the Mac and reboot holding option and c keys (I forget which one works)
Use the first option (default) to load PartedMagic into memory (watch out the disk will eject!)
Once in PartedMagic there is a Mount Drive icon on the right, doubleclick it twice to open two windows (three total) you can now transfer your files after mounting the disks/partitions using the two open file windows.
Unmount the drives before using the "Start" like menu in the lower left corner to quit PartedMagic.
If your Mac works with all this then your in good shape, you just have a hosed operating system and a $29 Snow Leopard install disk (c boot off of it) and a Disk Utility Erase (with Zero Erase preferred) and a reinstall of OSX Snow leopard will do the trick.
If your computer boots off the PartedMagic cd, but you can't find/access the internal drive, then your boot drive is dead and you need to replace it or have someone replace it for you.
If your computer doesn't boot off the PartedMagic cd, then it's likely a serious hardware issue.

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