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IDMah

macrumors 6502
Original poster
May 13, 2011
296
9
Hi all.

So my GF installed one of the those evil "Adobe Flash Updates"
I've cleaned it up (Avast and Malwarebytes)... I think. but!

Now We keep loosing the ethernet connection. Every other computer in the house
and we have a few work on ethernet but her iMac will not hold the connection.

I renew DHCP and it assigns it, but then when I check a few hours or a day later
it's blank again. The Wifi works perfectly, and I've reset the router a bunch of times
which fixes it for a day or two but then it's back.

Checked the usual places for Viruse/Malware no startup, no plugins
Doesn't matter Safari or firefox. Cable seems fine, and even switched the ports on the router.
Just in case. NADA!

Any ideas? Getting annoyed I can't figure this out or find a permanent solution.
thanks for any suggestions.
 

majurg

macrumors member
Sep 11, 2014
36
37
Hi all.

So my GF installed one of the those evil "Adobe Flash Updates"
I've cleaned it up (Avast and Malwarebytes)... I think. but!

Now We keep loosing the ethernet connection. Every other computer in the house
and we have a few work on ethernet but her iMac will not hold the connection.

I renew DHCP and it assigns it, but then when I check a few hours or a day later
it's blank again. The Wifi works perfectly, and I've reset the router a bunch of times
which fixes it for a day or two but then it's back.

Checked the usual places for Viruse/Malware no startup, no plugins
Doesn't matter Safari or firefox. Cable seems fine, and even switched the ports on the router.
Just in case. NADA!

Any ideas? Getting annoyed I can't figure this out or find a permanent solution.
thanks for any suggestions.
Honestly, you probably need to do a full re-install. Even though you've 'cleaned' it with various anti-virus programs, there is a very high chance your computer is still compromised, hence the issues you have been experiencing.
 

IDMah

macrumors 6502
Original poster
May 13, 2011
296
9
Didn't see anything in Etrecheck. Except that I was running multiple anti-virus apps. Malware and Avast.
If I manually set the IP it works so maybe our modem-router is on it's way out...
Any else you can think to try????
 

SandboxGeneral

Moderator emeritus
Sep 8, 2010
26,482
9,988
Detroit
Also, have you tried swapping out Ethernet cables? Could be a coincidence that the cable was going bad at the same time.
 

IDMah

macrumors 6502
Original poster
May 13, 2011
296
9
Yup and yup, several times!
May be that the modem/router is dying. but all our other machines seem fine. Knock Wood!
GF is reluctant to re-install OS but that may be the last act of desperation.
 
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