Right Click "Computer" and go to Properties. This should display any service pack information.
IME, I have seen this happen on systems that were in some way malfunctioning, from either faulty Windows core structure or malware. I wouldn't be too alarmed about it but I would run some quick maintenance.
Unlpug your PC and press the power button a few times to flush the RAM.
While booting, press F8 before you see the Windows Loading screen.
Select "Safe Mode with Networking"
Download|Install|Run
MalwareBytes and scan for|remove any harmful programs.
Boot into Windows , run a command prompt (Windows Key + R) > Type "cmd" > Enter) and type:
chkdsk /r/f
Allow it to reboot and check the disk for defects. Once able to login, another command prompt and type
sfc /scannow
To make sure that the Windows Core files are not damaged.
This may result in nothing, but any failing process (e.g. Updates) potentially expose other issues.