I just got my computer back and a new power supply was installed. The
system always interfered with my radio, but now it interferes so much,
I can't pick up anything on the MW band.

I can't open my box because it's sealed and I would void my warranty.
I can't take the box back right now because I'm working on deadline.
Is there any other remedy for this? Both radio and computer need to
be in the same room.

Any help would be greatly appreciated.