Anyone's computer slow since update?

The Eset scanner says

another antivirus was detected. this may affect the quality and performance of the scan, so i didnt run it

However, i ran the norton online scanner (Norton Power Cleaner) and it flagged Autochk.exe as bad, but was unable to fix it.

my computer hasnt been running slow, but sfc says there still are corrupted files.

How should i proceed? Do you want the log from the norton power cleaner?

Jacee said:

See this about autochk.exe Manually resetting AUTOCHK.EXE for a drive (don't bother to join!)

and this ... autochk.exe | ThreatExpert statistics
Do you have the path to autochk.exe that was removed by Norton?

What do u mean by path?

Jacee said:

I mean the file location, such as ProgramFiles, temp, system32, etc...

This is what norton power eraser said

Detected: Autochk.exe
Type: Startup Item
Local Scan: Bad
Remote Scan: Not a known threat
Location: C:/Windows/System32/autochk.exe

Jacee said:

Kind of a contradiction
Local Scan: Bad
Remote Scan: Not a known threat
Location: C:/Windows/System32/autochk.exe

Navigate to that file on your computer, upload, and have it scanned by jotti Jotti's malware scan

Yeah i know

But Jotti found nothing

Jacee said:

Well, that's good. It's possible that it could be corrupted.

YEah thats what som1 said earlier

How do i fix that?