Hi

I have a toshiba setellite pro a100, CD /DVD rom is working fine, but i am not able to boot from CD/DVD rom. any help is highly appreciated

Thanks

Dani AI

Generated

Building on the points raised by , and , the next diagnostics should focus on whether the laptop firmware actually sees the internal drive and on simple hardware checks the thread has not yet covered.

  1. Confirm device detection in BIOS/Setup (not just boot order). The drive should appear by model name on the System/Main page. If it is missing, the problem is almost certainly a hardware or connection issue rather than the media.
  2. Power and CMOS reset. With AC removed and the main battery out, press and hold the power button 10–20 seconds to discharge capacitors. Reinsert power and boot into BIOS again to force a fresh device enumeration.
  3. Reseat and inspect the optical bay. Remove the internal optical module, check the slimline connector for bent pins, debris or a damaged plastic latch, then refit until it engages fully. A marginal connector can allow the drive to read from within the OS but prevent it being enumerated early in POST. Use anti-static care.
  4. Isolate the drive vs. laptop. Test the suspect drive in another machine or in a USB adapter/enclosure. If it boots elsewhere, the laptop connector or logic is the likely culprit. If the drive fails elsewhere, replace the drive.

If the BIOS lists the drive but boot still fails, disable any fast/quick POST option so the firmware has time to find devices, then restore conservative boot defaults. Updating the BIOS is a last resort and must use the exact Toshiba A100 firmware from official support; flashing with the wrong file can permanently disable the laptop.

If hardware fault is indicated (connector or motherboard), repair options are replacing the slimline caddy/connector assembly or using an alternate boot method. These steps provide a systematic way to distinguish media, drive, cable/caddy, and motherboard causes without repeating earlier checks.

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What disk are you trying to boot from? Are you absolutely sure the disk is bootable?

What disk are you trying to boot from? Are you absolutely sure the disk is bootable?

^^^ What Rik said + did you check BIOS settings? Hit F12 at boot and make sure settings are right to boot from optical drive.

PP:)

Thanks for both who has reply,

I have try with different CD, however i am able to boot from external CD ROM, that is what i currently do when ever i want install OS.
BIOS setting, is setup to boot from CD Drive.
I have also tried by changing the CD Drive.

Thanks

Before you change your CD-ROM drive try to just clean the lens by any soft dry peace of cloth. It may just some dirt on it prevent it to read normally.

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