I've downloaded hijackthis but it won't run, it says it's not a valid win32 application.

I tried renaming exe to pif but still got same message as above. I also can't boot into safe mode, it stops at the mup.sys file and reboots itself, I disabled auto restart and tried safe mode but then after mup.sys I get a bsod. I've googled the problem but nothing I've tried seems to work.


Belinda