D link ADSL modem GLB 802-C problem

I have BSNL broadband 750 plus unlimited plan,d link GLB 802-C modem.now a days all lights(LA,ADSL,DATA,POWER)are glowing stable and the internet also not working.This is happening frequently.what may be the cause.i have configured modem in bridged mode.My pc config - windows xp with sp3, 2 BG ram, 1 tb hard disk, 1.8 ghz dual core processor.please help me

Please post screenshot as attachment (jpg) connection status.
Try to change mod mode to GDMT.
Ensure ALL phones in all rooms connected ONLY to ADSL splitter
PHone port.
feedback.
for ref: sample page:

i am connecting my modem in bridge mode to internet.I used to put utorrent to download in nights.when i saw in morning, the file was not downloaded actually and the all lights were on in the modem and glowing stable.this is happening frequently for past 10 days.The internet also not working.Then i have to switch off the modem again and switch on to connect to internet.this is the issue.Yes my all phones are connected through splitter.

modem in bridged mode.
In your Dial up setting redial attempts selected or not ?
Change mod mode to GDMT for a stable connection.
( May be your modem is synchronised for a higher speed )

where can i change GDMT settings?.i used to connect my internet using batch script file which will run automatically during pc startup.is there any other way to add the dial up process in startup?

Originally Posted by id_866

where can i change GDMT settings?.i used to connect my internet using batch script file which will run automatically during pc startup.is there any other way to add the dial up process in startup?

Incidentally, try to keep the modem vertically with power socket side faceing upwards. This helps to cool the chips faster.

where can i change GDMT settings?

Did you download the user manual ? see page 22.
Did you check ethernet properties/ options/ in your dialer?

I connected my modem in UPS and used till now.I changed to direct AC power supply now and going to test today.which is correct?I cannot find out GDMT settings in page 22.i have another doubt is this a hardware issue or might because of virus or spyware in pc?

See Post No 2. screen shot I had posted as an example page !!!!!

use the down arrows.
If GDMT is not listed try Adsl2 . or list the settings available.
Box No 2: ADSL2
Box 4: change to Adsl2
other settings ok. box 1 ,3 & 5 as shown.
I cannot see and set the options in the user manual !!!! Page 22
and post it here !!!

Find out SNR d/l and Attn d/l data.
or post as attachment screeenshot( JPG ) of connection status.
showing above.

I

@id_866,
page 22 of 39 page user manual pdf, the pdf page shows 22, but the actual page is 19
There you can change the adsl2, 2+, etc

i changed the option in box 4 changed to Adsl2.where can i find out SNR & attn data?My modem connected to UPS.is it right?or should i connect to main AC power?.i checked my pc with virus,spyware,malware everything fine.i connected in bridge mode again internet dialer disconnected after 2 hours.I checked redial settings it was fine but redial not happening.

try PPPoE ( alwaysOn" ) mode one night 0130-0230AM or early morning
say 0600 to 0900 AM. Schedule light downloads.
Keep the modem on.
( Rest of scheduled tasks same . except modem switch on switch off.)
Next day check your usage details. in selfcare portal.
Feedback.

BB HOME C UL 750 @ 512 Kbps

2011/08/23 02:29:45 2011/08/23 09:09:06 160250 1470862
1631112 23961 0

BB HOME C UL 750 @ 512 Kbps

2011/08/22 23:12:07 2011/08/23 02:15:07 57646 663526 721172 10980 0

I formatted my system on sunday,reinstalled O.S(windows xp with sp3) and installed symantec end point protection scanned the pc for viruses and one virus deleted.I connected my pc in bridged mode and tried downloading yesterday night(22.8.11).The results are above.It seems some disconnection happened at 2:15 a.m and reconnected at 2:29 A.M today after that no disconnection happened.Thanks for helping me.In the mean while i logged complaint with BSNL they will come and check my line ASAP.let's see for few more days.