Computer not sending signal to monitor?

[Nahkai Bass]

Ok so i just finished moving across country and set my computer up in my new place. The first few days it was working fine ,but now when i turn the tower on my monitor says that it is not receiving a signal. The first time it happened i unplugged my computer pressed the power button a few times and when i turned it back on it was fine. The next day however the same thing happened, but this time when i tried the unplug method it did not work. My next instinct was to clean it because i figured a lot of dust might have accumulated after the across country move. After finishing the cleaning and turning the tower on again it worked, but took me to a black screen that said something like "operating system failed to load, load operating system from disk". After i put in my windows 7 OS disk nothing happened. My keyboard wouldn't respond so i restarted the computer and the no signal appeared again. Since then the same thing has happened every time i have tried to boot it up. I know probably the first question i will get is about the specs, but i don't know them off the top of my head. I do know the motherboard which is a GA-77OT-USB3. Any help will be greatly appreciated since i really need this computer for school.

- I have already tested the VGA and monitor on a different computer and they both worked fine.

 

[USAFRet]

Power down, open the case, and verify ALL the connections are good.

 

[JackNaylorPE]

HD platters may be damaged due to the jostling

try the CMOS jumper to clear everything

 

[Nahkai Bass]

Power down, open the case, and verify ALL the connections are good.

Took a look and to the best of my knowledge nothing looks loose/and or disconnected.

 

[Nahkai Bass]

HD platters may be damaged due to the jostling

try the CMOS jumper to clear everything

Ok did that. Getting the same no signal message from my monitor though.

 

[jnkweaver]

Do you get any signal at all? It sounds like you did initially because the failure to load operating system comes from the computer so it was sending a signal to the mnitor.

If you see the initial post testing then you are getting a signal. If so go into the bios and see if the harddrive is even showing up.

 

[Nahkai Bass]

Do you get any signal at all? It sounds like you did initially because the failure to load operating system comes from the computer so it was sending a signal to the mnitor.

If you see the initial post testing then you are getting a signal. If so go into the bios and see if the harddrive is even showing up.

I did get a signal that one time immediately after cleaning the tower, but after that all that comes up on the monitor is a black screen and the words " there is no signal coming from your computer. Press any key on your keyboard to wake it up ( which obviously doesn't work". So i cant get to the bios.