I accidentally popped the wrong fuse in my house when attempting to turn power off in one part of the house while Tech Tools Pro was running an optimization. I turned off the power to my computer instead. Ever since the computer doesn't get past the gray screen with the progress indicator. I will, however, boot up from the Tech Tools disk, but can't do anything with it. All the tests run by Tech Tools "passed" hardware, software, volumes, etcc...
Please, can you help?
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I would try and find the OS X Tiger installation disks off of eBay, and install Tiger so that you can at least install Firefox, even if it's an older version. Your computer won't be able to run much, because of the limited RAM, and the fact that the processor is extremely slow.
Checking the power supply isn't the easiest thing to do, it involves pulling apart the entire machine.
You can try resetting the SMC, unplugging all power, hold the power button for 5 seconds, replace power, then attempt to turn on.
if it still won't turn on, and assuming you didn't get AppleCare or it is expired (past 3 years) it might be worth taking in to an Authorized Apple Repair Facility and see if they will check it out for free. If it is under warranty, most definitely take it in or call 1-800-APL-CARE
If neither of those are an option,
a tear down from iFixit for the 20" model, it is most likely very similar for your model as well
Hopefully that helps.
I suspect that all you have to do is reset the Power Manager (CUDA) to straighten your machine out.
There are several models of Power Mac G4, and the procedure is different for each. Comprehensive instructions are here:
wow, that's tough,providing you have maxed the RAM in the machine, and have it running upvtovdate Panther or Tiger ...while using firefox , have flip4mac installed .... give that a go, should work depending on what video. HD will be a nono but most vids should play depending also on how the video maker finalised there vids too..what codec they used etc etc
I had it running on a iMac G3 not too long ago with 1Gb RAM on Tiger .
to help more I'd need to know what OS- how much RAM -which browser/plugins you using ?