CD-rom makes computer reboot

Does the same thing happen with another cd?

If yes, then look at your bios settings and your drivers. What OS are you using? What other devices share the same IRQ that your cd-rom driver is using?

If no, then it's probably a bad cd.

I have seen this problem, they tried replacing the CD-ROM a few times, and in the end it ended up being the Mainboard and had to replace it.

Have you updated your BIOS, also maybe check your IDE cables. But as I stated before when I seen this happen the Mainboard had to be replace. Sorry bro

Disconnect the drive and make sure the connector pins power and ribbon cable are not damaged or loose. If a disk is loaded the drive is spinning and it may be drawing too much current. More than likely that would be caused by the power supply not putting out the 12 volts (+or-10%) that's needed. The voltage can be checked using a meter. The supply may be failing. If it's than 300W then it is a good time to upgrade either the supply or the case.
Try removing the cards except video and see what you get. Obviously try a different drive if or try the drive in another PC.

You might also try moving the CDROM to the second IDE channel, and/or checking the jumper for master/slave settings.

is the cd rom drive new and replacing the old drive? if not then it is quite obvious that the drive is faulty as you did not experience it before then. even booting from cd drive with a non bootable disk would not give you this problem

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