Boot.tidserv infection - Please Help!

Two days ago I started getting a popup warning from Norton 360 warning about a threat labeled Boot.tidserv. When I asked Norton to fix the problem it came back and said that it could not remove it. I tried to do a restore yesterday going back to 3/10 which was before I started receiving the warning. However, the warning still existed and when I selected to undo the restore, Windows ran into a problem undoing the restore and now I get to the Windows login screen and then it goes to a blue screen or it freezes or in one case I got it to load up and after a couple minutes it froze again.
I use this computer for my livelihood and while I have the files backed up, I need this computer ASAP.  Please help I don't know where to start since I can't really login.
I am running Windows 7 Home Premium 64-bit on a Dell Studio 1555 laptop.  I purchased from Staples and I am absolutely shocked to learn that I did not get the OS disk with it.  You have to request a copy from Dell.  Anyway, any help would be much appreciated.
SDKCompanyAsked:
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Pieter JordaanSenior Systems Administrator - Web hosting and Network Security.Commented:
Hi

You can try to press F8 when the windows boot process starts, then select 'Safe mode'.
If you can get into windows using safe mode then we have some options.

If you can't, then you will have to reinstall, or run the repair from the CD.

Once in safe mode, run msconfig from your start menu search bar, or from command prompt.

Then untick everything except your anti-virus program under the 'Startup' tab.
also untick everything except Microsoft services that you do not know from the 'Services' tab
  You will see a check box at the bottom to 'Hide all Microsoft services' to help you filter them.

Then reboot, and try to login again.
Once in, run a full virus scan, and try to remove the virus.
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SDKCompanyAuthor Commented:
BitFreeze,

I can get into safe mode which is good and I will try what you suggest.  My only question would be that the reason I got where I am is because this is a master boot record virus (aka backdoor.tidserv) and Norton says that it can not remove it.  I have the latest Norton with up to date virus definitions and when I click on help, it takes me to their website to an article that states I should post a topic on a forum such as www.bleepingcomputer.com.  I have actually done this, but it has been 4 days without an answer and I need to get this thing back running as I am losing money each day it is down.

Thanks for you help.
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Pieter JordaanSenior Systems Administrator - Web hosting and Network Security.Commented:
Hi

Your anti-virus should be able to remove it.
If not, download and install AVG from avg.com.

Here is a guide to remove it manually. - http://www.precisesecurity.com/trojan/backdoortidserv/
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SDKCompanyAuthor Commented:
Ultimately, TDSSKiller was what removed the virus and then some additional cleanup got me back in working condition.
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SergeKouperCommented:
This answer is wrong. Do I really have to pay 7 GB Pounds a month to be advised to download AVG? The level of the sa called experts is really going down. Please be a lil bit more selective in the accepted answer. thanks to answer me. thank you.
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