It may be your pc affected by virus,
How will you confirm?
Follow the steep. Press win key +R >type gpedit .msc andsoon an windows will open.
Press win key +R>ms config and soon an windows will open.
Press win key + R REGEDIT an windows will open soon.
Go to tools option >folder option >view>check onshow hidden file
Check off hide protected operating system file
Check off hide extension known type file.
BUT still there are no hidden file in drive C:
Think your computer has affected by serious virus.
>start>program>accessories>system tools >systemrestore >set earlier date. If you have the strong virus you can not do that,then you should better to copy your data if necessary
follow step>set your hard disk in another computer.before install be ensure that .another pc is well condition.
>show hidden folder can see all system file >can opentask manager>run type ms config >enter, it will be open windows>runtype gpedit.msc> enter, it will be show.>run type regedit enter ,it willbe open .think your another pc run in ok condition. Then type gpedit.msc andhit >administrative templates>system>turn off auto play>selectenable>click down arrow >select all drives.
SET IT FROM BOOTH SIDE BECAUSE THERE ARE TWO SIDES >Gotools> 1 folder options>views>check on show hidden files andfolders>2 check off hide extension >3 check off hide protected.
Now auto run program off. You can see and delete easily, allthe hidden unnecessary file and auto run file. Now install virus affected hard disk in this pc and startDONT LET DO SCAN .Explore Your all new partition select (DONT CLICK ON )only by draging the autorun/recycler/system volumeinformation and delete it. Don't do thesystem drive for ensure r click on my computer >manage>diskmanagement>identify system drive >and system drive letter>It will bewritten SYSTEM.
Now You can copy your file and store in another drive whichwould be formatted emediate.And you canformat drive one after one and transfer all the file to the formatted drive.Switch off the pc and put your pc again and install your os and set the pcsame way Then type gpedit.msc and hit >administrativetemplates>system>turn off auto play>select enable>click down arrow>select all drives.
If you did not have the cd rom , you should create abootable flash. follow the bellow link.
If you want remove manually 1st http://amiworks.co.in/talk/how-to-remove-new-folderexe-or-regsvrexr-or-autoruninf-virus/
If you want remove manually Autorun virus 2nd
You want to save your data download
Burn cd with the ISOfrom image burning option and restartpc, cd will start soon, http://www.windowsreinstall.com/articles/bios/
for BIOS SETUP and gomini windows and delete system volume information and RECYCLERfrom all driveexcept "C"
drive. Because Heart Of Castle.If can not remove downloadbootable f cecure,
b> And write the ISO and boot from CD at the start time.SET THE BIOS SETUP for BOOT FROM CD
DONT USE KAV becauseit will delete your windows file
Now you will install and just delete C drive and create Cdrive same andinstall. Installation guide
If you need more information, reply me soon.