I have a Dell XPS 420 Quad 2.4Ghz, running Windows Vista Home Premium 32 bit,4GB RAM, 2 x 500GB HDDs arranged in RAID 1. The Video Card is an NVidia 512MB GeForce 8800GT which came factory fitted when I bought the PC from Dell 5.75 years ago. The HDDs are pretty new and I've reinstalled Vista with RAID1 Configuration. HOWEVER, in recent weeks the picture first began to freeze, occasional red, blue and green dots appearing, soon running to a total freeze within minutes of switching the PC on and as soon as I try to run an application such as IE10 so I suspect the Video Card has packed up.
As the GeForce 8800GT is now obsolete and, whilst I can install another card myself, I'm not sufficiently technically minded to determine which of the myriad of Video cards would be suitable, I was wondering whether anyone could suggest an alternative. A friend said that maybe an NVidia GT 640 or GTS 450 or GTX 550Ti - my budget is up to circa £125 (seeing as I've already spent circa £175 on the HDDs, new Soundcard and new wireless card).