Solved Strange computer behaviour

[emilyan2010]

Hello. Today I opened my pc. Before it loaded windows, on the screen in which you can set up boot, i heard some strange sounds from pc, like when i am pressing a button repeatedly in that screen. Then, when it entered my windows 7 x86, everything looked fine. But, when i clicked on my windows explorer once, a huge number of windowses started to open with no reason (all with windows explorer), so i restarted computer. Next, when i tried to right click on a .doc file, same thing happened. Strange thing is that this doesn't occur always. In addition, sometime when i try to type something, i get my text on the next line, just like i typed enter (like this: hello
where are you). Also, when i tried to open my antivirus, it started to automatically scan, instead of just opening its window (i use microsoft security essentials). And sometimes, when i try to right click on the desktop, or on taskbar, or on any other file, nothing happens. These are the symptoms i found in the last 4 hours. In addition, i ran a virus scan with both MSE and online scanners, and nothing was detected. What should i do? Thanks in advance!


Yours, emilyan2010

 

[gazz9496]

might sound silly but it does kinda sound like you have a key stuck on your keyboard, possibly the enter key or space bar from what it sounds like anyway.

other alternatives, keyboard has failed.
you have a rootkit virus...pesky things that can be difficult to remove tdskiller from kaspersky should sort that if it's the case.
faulty usb ports/ps2 port depending on connection.

start by unpluging all devices that you don't need, leave yourself with the mouse keyboard and monitor, network cable only.

now things to try, borrow another keyboard and see if the problem persists, if it does try a different usb port, if that doesn't help boot to safe mode (f8 on startup) with network active, see if problem persists in that environment, if not then pop to google and search for tdskiller from kaspersky and run it( it's a free program and perfectly safe to use).

i'm listing the option for a rootkit as a possibility though i don't think it will be the problem, if changing the keyboard and port doesn't help it could be the drivers have gone for the usb, you should check device manager for any items that have a warning triangle over them, code 43 is the usual or code 39 for a failed device.

if safe mode proves to be a more stable environment for you to do this in then thats where you should start from.

let us know what you have tried so we can help further and give you direction, fault finding can be time consuming and as many have seen it can be the smallest of things that cause it and not the most obvious.

 

[gregrocker]

Run a full scan with Malwarebytes, in Safe Mode if necessary.

Then work through these Troubleshooting Steps for Windows 7.

 

[emilyan2010]

The strange thing is, this happened just this morning. I found some strange programs installed in add or remove programs and removed then, and now everything runs without problem(i forgot their name, but back then when i searched on google about them, i found they are installed together with browser without user consent). I haven't encountered any problem since i uninstalled them. If i will get any problem again, i will make a malwarebytes scan in safe mode. Thank you for your help!(the time in my country is 10:22 P.M.)


Yours, emilyan2010

 

[gregrocker]

Emily I would still run a full Malwarebytes scan and check your system files condition with SFC -SCANNOW Command

 

[doubled822]

If the other suggestions fail, I've found this program ComboFix to be of great help in cleaning out pesky rootkits and FakeAV malware.

ComboFix: A guide and tutorial on using ComboFix

I've ran it in safe mode with great success.

 

[Thorsen]

I would advise against using Combofix straight off. bleeping computer is awesome and combofix is very powerful

You should not run ComboFix unless you are specifically asked to by a helper. Also, due to the power of this tool it is strongly advised that you do not attempt to act upon any of the information displayed by ComboFix without supervision from someone who has been properly trained. If you do so, it may lead to problems with the normal functionality of your computer.

(to me it also sounded like the enter key being stuck and automatically activating on-screen commands)