Sometimes you need to have the computer off before hooking up such a connection so the video card can identify the screen being used when the computer is first turned on.... also maybe incompatible with the adaptor
SOURCE: Hook up a Sony VGC RA 840G desktop to a Samsung 46 inch TV
Some TV's don't have a VGA input. S-Video cable is more common. Look on the back of your computer an see if you have an S-Video jack. If you have a TV compatible output on your computer, such as an S-video jack, just take an S-video cable and connect it to your computer and your TV. If you do not, then attach your VGA end of your adapter to your computer and use the RCA, S-video or Component Video cable to attach to your TV. After you've made all the connections, make sure you are on the correct TV video input. Press the input button on your TV or remote until you see your computer's signal.
SOURCE: Dell inspiron 531 with vista home premium, sata
That blinking cursor is the way in which the BIOS is telling you that Windows or any other OS is missing . Since you are getting it without even an hdd connected it means that the southbridge is defective. Which means that the motherboard is dead, replace it.
SOURCE: When I turn my computer
The symptoms you described is common in fault mobo or VGA card.But VGA doesn,t turn bad so easy.I suggest to change your mobo first.
If you need more help post back!
Thumbs and testimonial are welcome!
SOURCE: how do I fix the error no vga input signal no dvi input signal monitor going to sleep
Check if you VGA is properly settled in the PCI slot. Try to take it out, clean the slot for dust.
If that doesn't help, it is well possible that you VGA is not working any more.
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Oh and since then something on the computer has been making a really high pitched sound. I'm guessing its a fan though.
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