Check the bios, which is at the beginning when you first turn on the pc and you press the delete or F1 key at a certain time to enter cmos, or bios. once in the 'bios ensure that the primary video card option is indeed your actual card ie. that if you have a onboard card you have onboard selected or agp for agp and pciexpress for pci express. If this still does not help then, perhaps remove the battery from the mother board and reset bios...***make a note of all the settings in bios first because if you did not personally build the pc then changing settings could have adverse reactions....
most times if a pc was working and lightning did not kill it, and it was not mistreated like with water or beaten I can resurect any system but I start at the beginning, without anything on the system then add things starting with HD then cdrom, then OS and vid card...then more RAM....
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>Delete the old Nvidia card drivers off your computer.
>Install the ATI video card drivers (you probably did this, but....)
>You may have to disable the integrated video on the motherboard (if you have it) in the BIOS setup screen.
>Make sure the new card is seated properly, take it out and reinstall it. This is one of the most common problems.
>Make sure the VGA or DVI pins in the monitor video cable are not bent or damaged. Another very common problem.
>Swap monitor with a different one; if you get video your monitor is bad or there are some settings need changing.
>Take the video card back, it may be bad.
>Change video cable to test. Make sure it is plugged in firmly with no damaged/bend pins in the plug. >Change monitors; if you get display with a different one your monitor failed >IF you have a separate video card, remove and reinstall; GENTLY clean the contacts and make sure it is installed firmly. >If you have integrated video on the motherboard (most PCs do now), get a video card and install it in the correct slot. If you get display, the integrated video on your motherboard failed. Use the new card instead. Don't forget to install the drivers for the video card.
I'd say it's a problem with your VIDEO CARD. The video card could have a break or a short
that could result in a poor/bad signal being sent to your display. The
extra load on it (in sending information to the monitor) could have been generated a
malfunction of the card.
Try to make up-to-date the driver if possible. To do so connect to your machine another monitor (through cable, of course) and see if you can have "image" there. If yes, then go for the update! To do so go right-click on MY COMPUTER > PROPERTIES > HARDWARE > DEVICE MANAGER and there select VIDEO CARD (or whatever is called) from the list of devices. Right-click on VIDEO CARD > PROPERTIES > UPDATE DRIVER After the update was done REBOOT.
"no signal" means exactly that. You monitor is not receiving signal from your PC. Recheck the video cable on both the monitor and the PC, make sure they plugged in properly.. Also try another monitor if you have it, and if it works with that monitor than more likely you have a frequency sync problem. In this case, using another monitor that works, and try resetting the video to basic 60Hz. In Windows, Start->Control_Panel->Display. Change the display resolution to the lowest, apply the setting, then change the monitor back to the questionable one. If it still doesn't work, then your video processor on your monitor is bad; RMA it if it's still warrantied.
1.Check your hard drive. that's where the information for Windows resides. 2. check your video card / removing it and replacing it with a know good video graphic card will let you isolate the issue more. 3. check the cable ( vga) to the 4. monitor >>>go to another computer and connect video cable to the computer. if you get a display then you know the monitor is OK. 5. Isolate each component of each path.
hook a different montor up to the same card and see if you get a signal. if you do change the input on the monitor not getting a signal. if this does not make the monitor get a signal your video input on the monitor is bad and needs o be replaced or repaired