system
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I have not changed any software or hardware configuration for months. Everything was fine until the minute of the latest AVAST version installation. The same disaster, the same circumstances on 2 PCs.
No doubt the reason is AVAST. My friend downloaded AVAST, then immediately installed it, rebooted system and was able only to dream about registration because of dialup errors. I installed AVAST, rebooted and the same. No magic, AVAST installation has to be the reason.
I checked everything possible in Windows and nothing was abnormal, no interrupts conflicts etc. I ran SFC utility, it reported everything is OK. Modem test reported success etc.
I checked AVAST settings, nothing was changed.
Maybe something has been done to the registry??
Although I am a programmer with 25 years expierence I feel lost. Waiting for help. PLEASE HELP.