so I"m at my friends house and her old laptop died and she had to get a new one. the old one used to not be able to open internet explorer (I found closing a suspicious process fixed that problem) but now there are two more problems (one possible extra that will be determined afterwards) that need to be solved.
When I try to open anything in the controll pannel it says that rundll32.exe cannot be found. I read online that there are supposed to be two folders that contain extras of it in them (a dllcache, and windowsbackup) neither of which I could locate. Is there any possiblility that there is an extra copy of rundll32 on the laptop, or do I have to go online/copy it from another computer to replace the rundll32 on the bad laptop? (i was able to locate it manually but I'm guessing it is corrupt and needs to be located, if you don't think it is corrupt please inform me that my diagnosis and prognosis are incorrect and why, I'd like to learn from this too =p )
Also I was going to post more information about the laptop in here, but when I tried to go into "system information", I was propt to indicate what program to open it with... is this due to rundll being corrupt or no? I am guessing that it is due to rundll being corrupt.
one other thing that I would like to know about, is... is taskmannager able to indicate weather a process is a critical system operation or not? I tried to end a process that I wasn't sure if it was a critical system process (ending it and it being a crit would cause a bsod, ending it and no bsod meaning it is probably a virus/such) but task mannager told me it was critical.
thank you in advance :)