Graphics Drivers playing up

Hey all! I just upgraded from my old GTS 250 to a GTX 560 Ti, and it installed pretty much fine. It worked fine, but I still have my dodgey old screen whilst my new one is in the post. I had an adapter that went from VGA to DVI, so I used that. However it was really loose and the screen kept on loosing connection with the computer. I thought it was this, so I tried on my brothers screen after a while trying to fix it - I had to turn the computer off at the power about 5 times, as it had no display - and it is DVI. I plugged it in, booted up the computer and about 1 in 2 times it will display anything, and if it does display something it will be about 2-3 minutes untill it looses display, and I can't see anything. The only way I can fix this is to use my motherboard's DVI connection, and then it runs fine (in low-res version, of course) and I don't know what to do. I reverted back to before the latest update to my video card drivers, but I'm still running beta drivers. They were working fine before - yesterday it didn't loose connection the whole time and it worked the whole day gaming intensively (Battlefield 3 on Ultra and Skyrim on Ultra with texture packs ) and it wasn't lagging or screwing up - it worked fine the entire day, leading me to believe it isn't a hardware problem. However today, I haven't been able to get further than 5 minutes before loosing any sort of display. I posted this in software as I wasn't sure if the problem is software or hardware, but it seemed more likely to be software. The only hardware problems I can think of is that it has a small chip in the metal saying the name of the brand (MSI) which shouldn't change anything, and it doesn't have 1 clip properly clipped in, but it still has easily enough support to stay there without problems.

Any help would be useful - I've run a virus scan, and it didn't find anything, both on Avast! antivirus and Malwarebytes Antimalware - I also used CCleaner to clean out my registries and general cleanup, just in case.

Thanks in advance !
Arcaian

 

Why not download the latest driver?

Do a proper Uninstall of the current driver with Add or Remove Programs, reboot and install the new driver.

You can also check your Refresh Rate and Screen Resolution settings, just to be sure they are correct.

 

I can't install new drivers unless I run the cord into the gpu (it wont pick up that I have a gpu installed if I don't) but it doesn't show anything anymore. Could it just be a faulty card ?