cannot run killswitch

hi forum

I’m reusing my old notebook after a long time, upgrading all, but…
try to run killswitch, it starts and suddenly closes, lefting icon in taskbar (that disappears rapidly)
also Task Manager doesn’t work at all
try to run KS in aggressive mode, same result
CCE and Avast full scans, nothing infected

I suspect an old task manager-like (uninstalled) had modified the system, but sfc/scannow didn’t solve it

can you help me?
sorry my english

best regards

Try the Repairs option of Super Antispyware to reenable Task Manager.

Please also scan your computer with Super Antispware, Malwarebytes Anti Malware, Hitman Pro and TDSS killer. That way we are more certain whether your system is infected or not.

hi Eric, thanks for your replay.

yesterday I launched regedit and I deleted a suspect key (**del-taskmgr), then Task Manager worked.
today I run all complete scans, nothing found.
also run Wise Registry Cleaner, but KillSwitch not work.
there are some .dmp files in KS folder, but I’m not able to work with.

best regards