If you want to make sure you don't lose anything it is best to use a external hard drive to back up your files. If you don't you stand a chance of losing everything. I have seen these things fail and everything is lost.
First thing is to make a backup of everything you want to save. Working on the theory that you have all your files and pics stored in your Library folders (please tell me you do) it will be easy to back everything up. I prefer to make a straight copy of the folders to a thumb drive or external drive. Plug in the backup medium and then open My Computer. Right click your backup medium and click open new window. Move both the windows so they are side by side, I prefer My Computer to be on the left and the backup medium window to be on the right. In the My Computer windows, on the left hand side you will see a panel with a scroll bar. Scroll up until you see Libraries. Under that you should see your 4 folders. Click the little symbol that looks like an arrow beside Documents and it should open showing My Documents. Right click it and then click copy. Now move to the backup medium window and right click once and then click paste. This should copy the entire folder to your backup medium. This could take some time depending on your medium your using the amount of files you have. Repeat these steps for My Pictures, My Music, and my Videos.
If you want to try getting rid of the viruses follow the info below.
You didn't give much info so here is a generic answer. This will cover checking for viruses and how to get rid of them. It explains how to scan using safe mode or how to make a bootable thumb drive and scan your system without Windows running. If worse comes to worse how to recover your files and reset the the puter back to factory settings.
It is important to run both ESET and Malwarebytes, what one might miss the other will catch.
First try Malwarebytes in safe mode. Make a bookmark of the link below or make a shortcut to it on your desktop.
http://www.malwarebytes.org/products/
The link below show how to start Windows in Safe Mode or Safe Mode with Networking.
http://kb.eset.com/esetkb/index?page=content&id=SOLN2268
When it boots to the desktop then click the the bookmark or shortcut you made. Download and install the free version and do a complete deep scan of your system. If it finds anything and it can not stop and delete it you will need RKIll to kill it.
If Malwarebytes does not find anything then try ESET online scanner to check for a virus. The first link is the online scanner. You need to USE IE while in the safe mode with networking to run it. The second link explains it.
http://www.eset.com/us/online-scanner-popup/
http://kb.eset.com/esetkb/index?page=content&id=SOLN2921
If neither of them does the job then you will need to try more extreme measures. Everything below should be downloaded on a puter not infected and loaded unto a thumb drive. Then disconnect the infected puter from the internet and follow the instruction to try to get rid of it.
Some viruses can be found but not stopped to be deleted. RKill can find and stop the viruses that others can not. Once the viruses has been shut down the security program can then deleted it. The first link below discusses how it works and it is VERY IMPORTANT to read this page. The second link is for the virus removal guides offered by Bleepingcomputer. You will need another puter to download RKill and malwarebytes. You will need both of them on a thumb drive, DVD or a CD. RKill has different filenames because some malware will not allow processes to run unless they have a certain filename. Therefore when attempting to run RKill, if a malware terminates it, try a different filename. READ the instruction carefully on how to use the programs together.
http://www.bleepingcomputer.com/forums/topic308364.html
http://www.bleepingcomputer.com/virus-removal/
Download links for RKill.
www.bleepingcomputer.com/download/rkill
If that fails then make a bootable thumb drive or CD. To make a bootable thumb drive you will need to find a working puter to download universal usb installer. You need to read the instruction carefully and know a little about Linux to use this. There can be dragons present if you do not understand what your doing. I make no guarantees.
http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
It will make a bootable thumb drive that you can add a AV to scan your system. I recommend that you try one of these AV to scan your system if you can make a bootable thumb drive. Read the article completely, there can be problems using these if you do not know what you are doing. I make no guarantees.
These can also be booted from a CD if you have burning software. When you boot the puter with one or more of these you can reconnect to the internet to allow them to update the virus data base.
http://support.kaspersky.com/viruses/rescuedisk
http://www.avg.com/us-en/avg-rescue-cd-download
You can also use Bitdefender but it only boots from a CD. Here is a link to the instructions.
http://www.bitdefender.com/support/How-to-create-a-BitDefender-Rescue-CD-627.html
If you can not boot into Windows to make a backup of your files then you use pendrivelinux and then add Linux Mint CD ISO to boot the lappy . If you have a Windows 8 or above then you need to turn off secure boot and select boot from USB before using the thumb drive. The thumb drive boot will also allow you to check out the rest of the puter. It helps to have a thumb drive or a external drive to copy your data and files to.
If it has a CD/DVD you can burn Linux Mint right to a CD and boot with it. Download Cinnamon 32bit.
www.linuxmint.com/download.php
Once you have recovered what you need you can reload your OS.
Since you did not list the make, model and OS this part is a generic answer. Some or all of it might help you.
Make sure you back up all your files before doing this.
If your resetting a lappy, make sure you have the AC adapter plugged up. You do not want this process interrupted. This should take one or two hours. It is best to check on it to make sure everything is going fine.
It is best not to boot into Windows to start this process.
If you can not boot into Windows then try Advanced boot options. When you press the power button, start tapping the F8 key. You will see the advance boot menu. Select repair your computer. (This option is available only if the tools are installed on your computer's hard disk.) Select your language and then enter your user name and password. Then click on (brand name) factory Image Restore and next. Answer the question and it should start the recovery back to factory settings.
Recovery from the recovery partition
When you press the power button start tapping the F key for your puter and the BIOS menu will open. Select recovery from the menu, answer the question and the recovery should begin. Depending on your puter this will take one to two hours.
Manufacturers BIOS menu F key
HP/Compaq ESC
ASUS Del
Sony F2
Samsung F4
Gateway, eMachines F10
Acer, Dell, Fijitsu, Gigabyte, Toshiba F12
Your BIOS menu should look something like this. Yours might be different. I am posting this to give you an idea of what it looks like.
ESC = BIOS menu
F1 = System Info
F2 = System Diagnostic
F9 = Boot Device options
F10 = BIOS Setup
F11 = System recovery
參考: TWB 35+ years of experience in the service industry. You name it, I have probably fixed it. I did not design it, I did not build it, I did not break it, but I am the one who can fix it. What that means is that I have spent a life time taking these things apart and seeing how they are made.
The difficult we do right away, the impossible just takes a little longer.
I hear voices, so please be quiet so I can listen to them.