Error Reading MBR Sector

Long story short I believe I have a deep infection somewhere but at this moment I am dumfounded. Then again perhaps I am not infected which brings me here.

Specs: Windows XP Pro w/SP3 and is updated; router, NOD32 ver 2.7, Superantispyware (SAS) Pro, snd Online Armor Pro. I am very careful while surfing. I don't use P2P file sharing at all.

When I go to scan with NOD32 I receive this information "Error occured while scanning MBR sector of 1. physical disk Error Reading sector." It repeats the same thing except the 1 is subsituted with a 2.

I then receive this message "User doesn't have administrator priviledges. Anti-stealth technology working in limited mode."

Let me add that I am also receiving the same "Doesn't have administrator priviledges" for SAS (I am totally blocked from scanning), Malwarebytes (can't update), and even the Seagate Seatools for Windows is saying I lack administrator priviledges.

Direction/advice/ideas will be most apptreciated.

 

Hello!

Such messages ("Error occured while scanning MBR sector of 1. physical disk Error Reading sector." and "User doesn't have administrator priviledges. Anti-stealth technology working in limited mode.")
could occur if you really don't have administrative rights and NOD32's on-demand scanner in v2 cannot simply scan some sectors . This is common for Windows Vista with limited user account and/or UAC enabled , or limited user account in Windows XP.

I would suggest you download and run ComboFix .Note- before running it , rename the executable file ComboFix.exe to something with random name (such as de.exe) . You might also need to be checked for rootkit or other malware .

 

Thanks for the reply. First, I am running XP Pro w/SP3. Second I have always had full administrative rights (as this is my PC) until recently.

 

Could you run ComboFix (renamed) ?

 

I have never downloaded or run ComboFix before. Please excuse my ignorance but once I download and install it where should I look for the .exe in order to rename it?

 

The best option is to seek help for your problem here: SpywareInfo, Bleeping Computer or GeeksToGo . There are some experts will help you.

 

It is just a single file and it doesn't require installation . Simply download the file , save it whereever you find appropriate (on your Desktop , for example) and rename the file . Then , run it.

Post back so that we see what happened / if anything changed

 

I downloaded Spybot S&D and it discovered a registry change that was designed to disable antivirus and other security software. Spybot cleaned it up and SAS now updates and runs as before. I can update and scan with NOD32 but I still don't have full administrator rights.