BleepingComputer.com: Monitor won't turn on

Hello. This is apparently my week for computer problems that I can't solve =( The other day I formatted my HDD and installed Windows 7 64-bit (my processor can handle 64) and then downloaded all the applications I had on it before the reformat. Now, my computer boots up, everything runs just fine, except my bloody monitor. My monitor doesn't turn on. I've ruled out hardware issues because everything (mobo, RAM, CPU, PSU, video card... etc) is all less than six months old (actually my video card I just installed today to test if the issue was the onboard graphics card). The only thing that is older than six months is the HDD, but that's only about three, maybe four, years old. I also doubt it is my monitor because other monitors don't work with my computer either. If it's not hardware, then it has to be software but I already reset my CMOS. I don't know what else to do. I can't do a system restore if I can't see what I'm doing. =( Any help or suggestions?
Thanks.

Provided your monitor is in perfect working condition, why not connect it to another PC and see if it works?
If it does, then there's something wrong with your PC's internal components, which we will get to next.

For now, just hook up your monitor to another PC (or your PC with another monitor) and post back with the result.

This post has been edited by ReviverSoft: 17 December 2009 - 05:15 PM

I already did that. My monitor works fine with other computers but other monitors don't work with mine.

Unfortunately, the age of hardware doesn't say anything about the likelihood of it failing.

What other indications do you have of the system operating? Do you get the successful POST beep and Windows startup sound on speakers?

~GR~, on Dec 18 2009, 05:07 AM, said:

Then it obviously has something to do with your PC hardware.

Check these components separately to isolate the faulty one :
RAM
GFX Card
PSU

You can test the above components either on the existing or using another PC.

This post has been edited by ReviverSoft: 17 December 2009 - 07:26 PM

No, I don't get a post beep but as far as I recall I've never had a beep to tell me it was working before this. Could it possibly be my hard drive?

It could certainly be the hard drive, but we're just guessing.

If you normally don't hear a POST beep, we're immediately at a disadvantage in diagnosing the cause of the problem.

When you said "my computer boots up, everything runs just fine", what were you meaning, does the HDD access light flash, does Windows seem to load (eg as I mentioned, get Windows startup sound)?

If this doesn't happen, being able to hear if there's any beeping at POST is very helpful. If the motherboard doesn't have an onboard beeper or a case speaker connected, hooking up the speaker if there is one in the case would be helpful.

Okay. Just to make sure, I tested the PSU, CPU, the hard drive, and my RAM. All three work just fine. My RAM worked fine on another computer, another hard drive did the same thing with my computer, and my PSU is supplying power. This leaves the onboard graphics card, and the mobo. I'll test the on board graphics card and see if that works. >.< If not, I'll be very upset with the mobo.

This post has been edited by ~GR~: 18 December 2009 - 12:50 AM

<<...another hard drive did the same thing with my computer, and my PSU is supplying power...>>

Curious as to how you can draw such conclusions...if you get no POST beep and no visuals on your monitor. Just because some juice seems to be flowing through parts of the system...that's no indication that a sufficient amount of current is doing the job...previously done.

Louis

~GR~, on Dec 18 2009, 11:20 AM, said:

Just take the motherboard to a local service centre and get it checked. It might be the onboard graphics that's been acting up.