Try taking the battery out of the motherboard. It's a very long shot but occasionally I've had a problem which wasn't resolved by shorting the CMOS but did recover itself after leaving the battery out overnight. It shouldn't make a difference but it did.
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Can CPus carry viruses?
- Thread starter rousha
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I've never heard of a CPU shorting out a motherboard before. Not saying it's not possible, but it's far more likely you have an older BIOS that didn't recognise that chip and it mucked up the CMOS when you switched it on! (Though admittedly to do it to 4 different motherboards doesn't sound likely!
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Try resetting the CMOS on the borked motherboards by setting the jumper to the CLEAR position and taking out the battery to let it drain like Hades said. Then try it again with the old chip (the one you know works) and see if it boots again.
If that doesn't work, there's a chance a new BIOS chip might fix it, but you'd need to either send it off to be reprogrammed for you or hot-flash it on someone else's board.
)Try resetting the CMOS on the borked motherboards by setting the jumper to the CLEAR position and taking out the battery to let it drain like Hades said. Then try it again with the old chip (the one you know works) and see if it boots again.
If that doesn't work, there's a chance a new BIOS chip might fix it, but you'd need to either send it off to be reprogrammed for you or hot-flash it on someone else's board.