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I cannot boot my computer from the TechTool Pro 3 CD, even though it should boot my computer. What can I do?

April 26, 2017boot CD Computer Pro techtool

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10 Posted

I cannot boot my computer from the TechTool Pro 3 CD, even though it should boot my computer. What can I do?

1 Answer

0

10 Posted

Try the following: • Choose the CD as the startup disk in the Startup Disk control panel. • Disconnect all third party peripherals, including USB hubs. Have connected only the original Apple keyboard and mouse if possible. • Zap the PRAM • Be sure the CD is not smudged or dirty. If it is, then carefully clean it.