The runtimes? There's more than 1 set of VC runtimes, and you should have all of them that came out after your version of Windows to ensure things will work.
There's also a chance the Windows install itself is full of bad files, it tends to happen over time. If that's the case you'd be better off just nuking the drive & reinstalling everything from scratch.
<Erf> SkulFuk: gf just made a toilet sniffing joke at me
<Erf> i think
<Erf> i think i hate you