Is this safe?

my boyfriends computer has adware one it, it wont let him complete a sweep without shutting down, is it safe to run a sweep in safe mode?

Is this safe?security

Running an anti-adware/spyware program in safe mode is completely safe. The only problem you MAY run into is the program may not function properly in safe mode (this is more of a programming flaw in the anti-adware/spyware). Depending on what program you use to detect and delete adware, you may want to see if it has a scheduling function built into it and try to set a scan before programs (and therefore adware) are loaded into memory. These scans are usually set as either "At System Startup" or "At Login" and should be able to get the adware before it gets lodged into the Windows OS.

There is the possibility that this could also be some sort of virus. Make sure that if you have an antivirus that it is up to date and you perform daily scans. If you do not have an antivirus, then there are plenty of free ones out there for your personal use! Of all the free ones, I currently would recommend either AVG Antivirus or Avast! Antivirus. I hope this helps solve your problem!

Is this safe?trojan

you need to download a good adware remover like a Ad-Aware. (free) . try to not to use safe mode. but if you must it wont hurt anything. (it will just be slow)
THat just might be a bad virus.

I have the same probblem when i run Ad-Aware SE Personal.

I freezes or shuts down my computer
Reformat and reinstall.