My first PC, a 286. Still remember all the sounds it did (from checking the memory, the CPU, the GPU, the drives and the extension cards) and the sequence they played. Wish I had it recorded at the time, because it was very iconic.
Another blast from the past: My most hated boot sequence is from our old 56k modem. God, were those things annoyingly noisy.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/