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How can I restore Notepad after having it infected by a virus?

My computer got attacked by a Notepad.exe virus on Windows 7.

I've gotten rid of it, but now the standard Notepad program is missing. I can't run any of my .txt files.

What should I do to repair this?

All the files on my external drive have been replaced by a single shortcut which can no longer be opened

Here is what happened after I used Malwarebytes Anti-Malware:

Before I used Malwarebytes Anti-Malware I could still open that shortcut. I know that a virus made that shortcut and so I tried to remove it, but after using Malwarebytes Anti-Malware things are worse. I can't even open the shortcut now. Can someone help?

How can I regain administrative privileges after a virus infection?

Is there software that allows you to bypass administrator restrictions? The problem is a virus has restricted me from doing anything; I can't install anything because I don't have the administrator permission. Is there software you can recommend to overcome this?

thanks!

Why does anti-virus software not delete the viruses, malware, etc., but instead quarantine them?

Why does anti-virus software not completely delete the viruses, malware, etc., but instead quarantine them? Is it not better to completely get rid of them? Why? And how can I manually remove them?

Files names in pen drive turned into gibberish text

Recently my uncle gave me his memory card from his phone telling me something is wrong with it.When i tried to check the contents of memory card this is what i found(take a look at screenshot).

I have scanned it with bitdefender it gave me a message saying 4 threats are ignored. Is there anyway to fix or recover the files. And can anyone please explain what is the reason for the gibberish file names and how to avoid it from happening again.

What is the command for removing windows shortcut virus?

We have to insert our pendrive (flash drive) at cyber cafes or other public places. So, it is almost impossible for us to ensure that systems we plug into are malware-free. As a result, we experience a recurring problem of our pendrives becoming infected.

One type of malware that has been a problem is a shortcut virus, which renders all my pendrive folders hidden. When I view the drive contents, I see nothing except a shortcut file. But my folders appear when I search.

How to solve this?

I am a victim of the Petya ransomware. Is there a solution to decrypt my disk?

My computer got encrypted by the Petya ransomware. After a long search I could not find a solution other than using file recovery software.

This helps a bit, but I am wondering if there is a way to completely restore my disk. I am not going to pay.

How to be certain you don't have a virus when anti-virus scanners find nothing malicious? (Windows 7)

I recently spent many hours troubleshooting a laptop that could not connect to the internet. The laptop exhibited no other unnatural behavior, and so my first thoughts were to try connecting to other networks, try a new NIC, etc... The question I posted can be found here with more detail. One of the first things I did was to check for viruses with MalwareBytes, eSet, and Panda Cloud Antivirus... All 3 scans were run separately and independently of one another, and no virus was found. I then proceeded to spend hour after hour troubleshooting, and in the end I just took the computer to a repair shop where it was discovered to have a virus.

My question is not subjective, I'm not asking what is the best anti-virus software to use. I'm asking how can I actually be certain I have no viruses when popular and generally effective anti-virus scans detect absolutely nothing?

In the past my routine would be to run through the list of running processes and start-up programs, and use online resources to try and find anything malicious. This routine seemed relatively silly to me in the face of all of these anti-virus programs, and I thought it would be more effective to run scans than to manually look on my own.

Obviously IT firms have some effective method of identifying viruses, and I doubt these companies are just running some virus scanner. Clearly experience would have led me to identify my own problem as a virus, but I feel like there are all kinds of ways an undetected virus can manifest itself, so I don't want to rely solely on experience.

Edit:

I should clarify this a little bit. I'm not necessarily looking for some "ultimate" checklist of things to do to identify viruses, but clearly there are ways to identify them when our normal anti-virus scans fail, and I'm wondering what some of these approaches might be.

Safely opening a suspect USB Drive

If you have a USB Drive that may or may not be contaminated, what is the best way to retrieve data from it without reinfecting yourself?

Cleaning windows viruses from linux

In a dual-boot system, does anyone have experience dealing with viruses that hit windows from linux? (disambiguation note: dealing with them from linux .. )

The C:\ in windows is mounted to /media/disk on linux

Things I'm looking for:

• Reading/Editing the Registry
• Scanning for viruses and fixing them
• Reading/Editing startup programs

Windows 10 'Reset this PC' effective for removing malware?

I've long fallen back on reformatting my hard drive whenever I've got a virus/malware/spyware, but now that I've upgraded to Windows 10 can I put those days behind me because of the 'Reset my PC' function?

It sounds like it pretty much puts me in a brand new, reformatted-type state.

Can anyone speak to the efficacy of 'Reset my PC' for getting rid of this crap?

Clean up infected computer from viruses [duplicate]

Possible Duplicate:
What to do if my computer is infected by a virus or a malware?

I have a computer which had AVG Free installed from day one. After several months of operation, it starts detecting viruses and trojans all the time.

Besides running a full scan, what should I do to clean the computer? Should I install another anti-virus or anti-malware tool (can it help?), or once viruses infect a system the only real solution is a clean format?

(Lately I've heard of viruses that burn themselves in the BIOS, so a clean format might not always work ... how common is this technique? Should I burn a fresh BIOS as well?)

What can I do about a virus that's affecting my relatives even though they're in different places?

In the last week, I have had two family members contact me about possible viruses on their machines. The cases involve different machines in different geographic locations. The only similarities are that they are both on BT and both use McAfee Internet Security packages.

What happens:

The users describe to me what sounds like a standard popup from a website — you know, the "X viruses found on your machine its in risk click here to remove etc etc" sort — however, it seems to sit behind the desktop icons on both machines and persists after a reboot of the computer. As soon as the user logs into the machine, it's there, before the user has even opened a browser window. Also in both cases it seems to stop the user from opening McAfee, saying it's corrupt.

I instructed the user to reboot into safe mode and try to run a full scan, which both users did. Both scans came back clean. However, upon booting back into Windows normally — even with the WiFi switched off — it's there again.

Now for the really weird part.

The first user was my mother. I went around two days later to take a look, and it was gone. There was no sign of it, McAfee opened fine, there were no incident reports, there was nothing unusual showing in ms-config startup... nothing at all. She asked me to format the disk and reinstall Windows anyway, which I did, and it's never returned.

Then, today, a third person phoned me with exactly the same problem. Same ISP, same antivirus.

I am kind of stumped. What should I do from here?

How do "Powerusers" manually find and remove malware from Windows [duplicate]

Possible Duplicate:
What to do if my computer is infected by a virus or a malware?

I'd like to know what tools and methods are used by the pros to remove malware in Windows. Is HijackThis enough? How do you manually identify the stuff that's deeply rooted into the OS?

My dad's XP system is clearly infected with something, but the usual advice (multiple scanning tools in safe mode, live CDs, etc) just ain't cutting it. He refuses to format because he has work that needs to be done, and for now the malware hasn't done anything too obstructive.

I'm embarrassed to say that I recently completed a Computer Science degree at a top 10 CS school.

How can I perform a virus scan of my Windows install from Linux?

Earlier today, I noticed that Windows Defender was acting up. It was disabled and, once re-enabled and tasked with a quick scan, it would error out with some Windows License Expired error code or something.

Since that's nonsense, I think that the best thing I can do is shut Windows down and run a virus scan from a clean copy of Linux.

How can I go about to sanely do that?