Some of the things you're seeing are normal.. When you swapped the 160 GB hard drive into the Dell computer, then installed the operating system, IF the hard drive is good, the OS should install and operating correctly as you are seeing.. BUT you will NOT have success by simply placing it back in a different computer such as the eMachines. Because the installation recognizes the hardware and driver needs from the Dell, it will seldom correctly recognize the motherboard, hardware, and drivers for the second machine.
That said, it appears like you're motherboard is at issue. Yes, it could possibly be a BIOS issue and that's easy to test simply by installing the most current BIOS update for your model. The hard drive works when swapped out and so do all other basic parts of the computer.. My next step, if the updated BIOS doesn't help, would be to replace the motherboard on the eMachines, wipe the hard drive, and reinstall everything from scratch.
Just a note: I've had similar problems here on a few customer's eMachine computers.. Motherboards and power supply issues here..
Hope this helps.
Hello CNET Forums,
I recently Emailed Emachines support with the following email describing in detail the problems I was having and they responded with basically screw you, you are out of warrantry so we offer no help to you at all. I am posting the email I sent them along with a detailed report of the problem I was having so hopefully someone here has suggestions on what steps I can take. This is an Emachine T6410 here are the specs
CPU: AMD Athlon? 64 3200+ Processor (512KB L2 cache, 2.2GHz, 1600MHz FSB)
Operating System: Genuine Microsoft