magic happend the the other day! my integrated NIC stoped working. I've scoured the net for info on the siocsifflags error that returns when I

ifconfig eth0 up

it tells me that those resources are temporarily unavailable.....i've messed with it for two weeks now and am beginning to assume they are permanently unavailable

I've seen that this is an irq issue on some machiens and that if i disable Pnp in bios it should fix it. however my bios doesn't appear to have that option.
there are two other devices runing on the same irq
when I

dmesg | grep "irq 20"

but neither are assigned a mac,
both seem to be unassigned sata ports.

currently running kali, but issue started in xp.

any help would be appreciated.

Did you add a device? Else buy cheap NIC and see if that works?