I installed something without realizing that is was a virus file. and unfortunately, service.exe has been infected. Is there any possible way to fix and repair the system without reinstalling?
You can use the tool found here: http://www.tweaking.com/content/page/windows_repair_all_in_one.html. Install the Malwarebytes software if you don't already have it installed, then let it scan and try to fix your system. Shane, the creator of the program, is trying to make this tool as close to a an all-in-one as possible, including malware infection removal and system fixer.
you can try removal tool (read my comment on "//www.makeuseof.com/answers/why-cant-i-uninstall-some-software-from-my-pc-after-a-virus-was-removed/"), combofix is good too, after you run removal tool try to run SFC (system file checker), to run this go to start menu->Run, and type "sfc /scannow", insert your windows installation disk first. let the installation disk restoring the original windows file.
also antivirus softwares may sometimes create problems with system files leaving you unable to boot or corrupt system
buddy you should try System File Checker (SFC) to use the command in cmd prompt see this link (microsoft) -- [Broken Link Removed]
Use ComboFix, but only download it via the following link. Download it to a flash drive, boot into Safe Mode and run. Though you can run from normal mode, just make sure you have the latest download and disconnect your Internet then run.
I do this very same thing for clients all the time and always does the job.
if you have windows restore point use it to revert back just before installing that something
you can also copy it from another computer and send it here C:windowssystem32services.exe
or scan with Emsisoft Emergency Kit
system restore wont work
hey buddy you should try System File Checker (SFC)
to use the command in cmd prompt see this link (microsoft) -- [Broken Link Removed]
System File Checker (SFC) is limited in its function and perhaps will not fix it as it should be since infection can have multiple targets and will stay alive in order to reinfect services.exe.
if System File Checker (SFC) is done it should be more technical like the following solution
Services.exe infected – @ and N.dll
[Broken Link Removed]
System restore can solve problems and perhaps can make easier the recovery of the system, but if system restore also is corrupted then infection seems to be very significant.
Use a bootable AV scanner such as those on the Trinity Resource Kit. Keep scanning & removing infections until the scan comes up clean. Boot into safe mode (technically, service.exe should not be absolutely necessary for the machine to start in safe mode), open an administrative command prompt and run 'sfc /scannow'. This should replace the service.exe file that should have been quarantined by the AV scanner as well as any other missing/corrupt files. If you have Malwarebytes installed on your system, you should also run a full scan with that just to make sure you are clean. If it isn't installed, install it and run the scan.