Router resyncs when secong p.c is booted

[HighPerformance]

Hi,

I did a search to see if any other threads had an answer to this but found noting so here goes.

Software Version 1.06e Two P.c's both hard wired, wireless switched on for laptop and android phone (both not attached to wifi when the resyc takes place).

My line att is around 43 - 47 deepening whether i use adsl 1 or 2+ the re sync happens which ever Modulator i force.

My normal sync is around 7500 @ 6db when my son boots his P.c the router immediately starts to re sync and drops to around 6400.

Both P.c's are using Abit IP35 Pro mother boards with on board Dual Gigabit LAN controller.

It could be a fault my end just wondered if anybody has seen this problem before but have not had this problem before with other routers.

Thanks in advance.

[HighPerformance]

Problem fixed, i uninstalled the Lan driver from my son's P.c and reinstalled now there is no re sync when 2nd P.c is booted.

EDIT : No this did not fix the problem several Ethernet cable,s ports changed bios re-flashed and reset win updates rolled back and the router still re-syncs when my sons P.c is switched on and again when switched off.

I have read on other forums that it is a known problem with billion 7800n and windows 7.

Bought a Wireless N pci card and now the problem has stopped but at £15 it has made a quite expensive piece of kit more expensive.

[HighPerformance]

It started doing it again luckily i found a post on another forum the poster showed a support email saying to change to pppoe and llc bridged. (even though my isp is pppoa vc-mux)
This has stopped the resyncs when booting pc laptops xboxes , i do find it strange nobody commented on this but hey i got there in the end.