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You should upgrade or use an alternative browser. Hello everyone,

I have a problem with my 20" iMac from early 2009. A few months ago, my father gave me the iMac to reinstall it and install a fresh operating system. At that time, the Mac had a 320GB Apple HDD and 8GB of RAM installed. Reinstalling proved difficult because the Mac does not show the boot selector. When I start with the Option key pressed, the screen just stays white, and the Mac does nothing. If I try to select a USB stick from the system via Startup Disk, it doesn't show up. However, in Disk Utility, my prepared USB stick is displayed as "bootable." In other forums, I had read that the HDD might be defective, so I replaced it with an SSD and reinstalled the OS (using a OSX 10.6 DVD and then updated to El Capitan). The problem persists.

To summarize:

What I have already tried:

If you have any ideas or even a solution, I would appreciate a response. I'm slowly running out of ideas and patience.

Best regards,

T-Man_16