HD4850, Vista, and DX10 - Please help!

I am about to lose my mind.I recently upgraded from XP to Vista Home Premium 32bit.Before the upgrade, I was happily playing The Witcher EE, the Crysis demo, and Fary Cry 1.After I upgraded to Vista, I continued playing and beat Far Cry. I went back to The Witcher, and shortly after it started, the game would crash, sometimes with a Low Memory error. I tried the Crysis demo, which ran great under XP, and as soon as the level would try to display (after loading), the game would crash. I can still play Far Cry.From what I gathered, it was an issue with DX10. Fary Cry, of course, using the older dll's and still running great. Even if it is not DX10's fault, the problem appears to be software.So, I downloaded and installed the latested DX10. I downloaded and installed the latest CCC and drivers... no change. I downloaded all the Vista updates until it said it was up to date, no change. I also set my BIOS to fail-safe settings. Nothing.I am one step away from doing a clean install of Vista instead of my current upgrade, because something just appears to have been jumbled in the mix, but I don't want to mess with all the backups and reinstalls.Also, an issue with the ATI drivers. I downloaded Catalyst 8.9 drivers from 9/17 and appeared to have installed them correctly. Why does my driver version still say 8.530 from 8/20? Shouldn't it be 8.9 something? I find that very confusing.My GPU hovers around 70 degrees F at the desktop. Help!My computer:Intel Core 2 Duo E8400 @3.00GHz2 GB DDR2 800ATI Radeon HD4850 HD4850, Vista, and DX10 - Please help!
install 8.8 and see if that works !!HD4850, Vista, and DX10 - Please help!
I installed 8.8, no change.I also reinstalled DX9c and tried playing under that, no change.Reinstalled the game, no change.This really sucks.
Hmm%26hellip;%26hellip;I was STUCK WITH the problem too%26hellip;%26hellip;My Computer:Core 2 Duo E8300MSI P45 Neo3-FRADATA Vstia DDR2 800+ 2G *2PowerColor Radeon HD4850Seagate Barracuda 7200.10 8M 250*2 with RAID0It works perfect well in Windows XP SP2.Actually,before I install the Vista system,I never get a bluescreen~~Recently,I wanted to make the most of the 4G memory so I install a Vista Ultimate X64.Everyting seems normal before I install the display driver,and ONCE I INSTALL IT,my computer would CRASH DOWN IN 2 MINUTES!!To solve it,I have tried Catalyst from 8.7 to 8.12~~nothing,no change.I also reflashed my motherboard BIOS%26hellip;%26hellip; Still no change.It seems ATI Radeon HD4800 series have some problems with Vista and P45%26hellip;%26hellip;I have no idea now.Some days later, I will try a Geforce 8500GT from my dorm mate.Will I change my Videocard to a NVIDIA one? I am struggling%26hellip;%26hellip;
[QUOTE=''zaphod_b'']I am about to lose my mind.I recently upgraded from XP to Vista Home Premium 32bit.Before the upgrade, I was happily playing The Witcher EE, the Crysis demo, and Fary Cry 1.After I upgraded to Vista, I continued playing and beat Far Cry. I went back to The Witcher, and shortly after it started, the game would crash, sometimes with a Low Memory error. I tried the Crysis demo, which ran great under XP, and as soon as the level would try to display (after loading), the game would crash. I can still play Far Cry.From what I gathered, it was an issue with DX10. Fary Cry, of course, using the older dll's and still running great. Even if it is not DX10's fault, the problem appears to be software.So, I downloaded and installed the latested DX10. I downloaded and installed the latest CCC and drivers... no change. I downloaded all the Vista updates until it said it was up to date, no change. I also set my BIOS to fail-safe settings. Nothing.I am one step away from doing a clean install of Vista instead of my current upgrade, because something just appears to have been jumbled in the mix, but I don't want to mess with all the backups and reinstalls.Also, an issue with the ATI drivers. I downloaded Catalyst 8.9 drivers from 9/17 and appeared to have installed them correctly. Why does my driver version still say 8.530 from 8/20? Shouldn't it be 8.9 something? I find that very confusing.My GPU hovers around 70 degrees F at the desktop. Help!My computer:Intel Core 2 Duo E8400 @3.00GHz2 GB DDR2 800ATI Radeon HD4850 [/QUOTE]



it seems you dont have enough memory so vista is closing the game to prevent vista from crashing itself... get another 2 gigs of ram.....