Hi guys, this is my first thread. Ive been a active browser for awhile but just now got around to posting something. I need your guys help. I just built my first computer about 3 months ago and ended up getting the acer al2423 24" lcd monitor for my display. Ive recently been having a problem with it having a gray box pop up and say no signal even though i can view my desktop, browse the net and so on. Im not the only one with this problem b/c i noticed on newegg under the reviews for this monitor there is many people having this problem. And have seen a few people on here mention it too. I'll be using my computer and suddenly it will pop up, stay there for about 3 minutes, the screen will flash off then on and it will be gone. Then about 3 minutes later it will do the same thing and repeat itself. Anyways i would appreciate any help on this. I do have the latest drivers and all of my cable connections are fine. Thanks again!