Hi Rose welcome to Geeks To Go
Which other forum referred you here? Do you have a link that you copy and paste here, to help us with a bit of the history on what they did to remove any malware?
The only "hardware" that could effect your Antivirus scan would be memory.
Such as RAM or even a corrupted Hard Drive.
Generally most Internet Security software (that comes with Antivirus as well) does use a lot of RAM when scanning.
What Antivirus or Internet Security do you have? Are you running any other live protecting software at the same time? (ie 3rd party firewall or Anti-Spyware program?)
How much RAM is installed in your computer?
You could just run a Memtest scan
on your RAM as well.
The other option is Hard Drive (memory)
Some hard drives are just so full, that a scan could last hours, and during that time things like Windows Updates and many other automatic background updates could be happening as well.
Generally a full updated Antivirus scan (of which should have been requested by that other
forum) Should be done without any other programs running in the background.
You may need to supply more information on your system and what's running, and what has already been done on the other forum