Hi guys
before i begin i must thank all the guys on the forum who helped me with the problems i experienced with the above card..... these were much appreciated and all were very helpful
the background is i was experiencing grey screen/vertical line crashes that would occur when running games and certain programs.... i tried other drivers and replaced my psu... however to no avail
anyway after all the research on this forum and others i managed to get the HD4850 running ok,and all games seem to be running ok ..... and heres how i did it
1) uninstalled the 11.6 release drivers using the ati software utility..... rebooted the pc
2) manually deleted all ati related files... including
c/program files/ati
c/program files(x86)/ati
c/program data
c/users/app data/local
c/users/app data/roaming
3) manually deleted the following registry keys ...
local machine > software > ati
current user > software > ati
4) shut down pc and installed the HD4850... connecting the required 6pin connector ( note : i am now using a 500w OCZ stealthstream psu ..... much better psu and more stable )
5) booted up pc and pressed F8 to enter safe mode..... in safe mode i ran "driver sweeper" and selected amd,nvidia display and nvidia chipset ( i have previously used the XFX GTS250 )
6) after driver sweeper finished i restarted
7) back on desktop i installed the 10.2 ati release ( this was the first driver that patched the issue "grey screen/vertical line corruption" ...... upon completion i rebooted the pc
8) back on desktop i pressed "reset to factory defaults" .... then restarted pc again
9) driver installation is complete
obviously end users shouldnt have to carry out this when installing drivers,however with the amount of cards previously installed on my pc this was required,and from initial testing it looks good
ive ran all games including the ones that caused problems and they ran without any problems.... and 3dmark03 scored a mammoth 40,137 marks.... this is a record for my pc so im pretty happy
ive done this post so others can try this..... from the hundreds of posts ive read over the last fortnight this is a common problem and not only with the HD4850..... other cards experiencing grey screen/vertical line corruption include the HD5770,HD5870 and other 5 series cards..... ive also read problems with HD4870,s and also HD4890,s....
as i mentioned in the above guide i used the 10.2 drivers.... and as i mentioned this was because these were the first to include a fix for the grey screen problem.... obviously the fix must be included in all future releases however the 11.6 drivers i previouly tried were probally the worse..... and thats why i settled with 10.2
finally and since this is the first time ive managed to run any games with this card i must say how well it performs.... ok its not the latest in hardware however the only other card i have which i can compare it against is the XFX GTS250...and allthough on paper the GTS250 is more powerful the HD4850 performs better... well in my opinion anyway
so there you have it..... another problem sorted.....
i hope this helps someone....
cheers guys
before i begin i must thank all the guys on the forum who helped me with the problems i experienced with the above card..... these were much appreciated and all were very helpful
the background is i was experiencing grey screen/vertical line crashes that would occur when running games and certain programs.... i tried other drivers and replaced my psu... however to no avail
anyway after all the research on this forum and others i managed to get the HD4850 running ok,and all games seem to be running ok ..... and heres how i did it
1) uninstalled the 11.6 release drivers using the ati software utility..... rebooted the pc
2) manually deleted all ati related files... including
c/program files/ati
c/program files(x86)/ati
c/program data
c/users/app data/local
c/users/app data/roaming
3) manually deleted the following registry keys ...
local machine > software > ati
current user > software > ati
4) shut down pc and installed the HD4850... connecting the required 6pin connector ( note : i am now using a 500w OCZ stealthstream psu ..... much better psu and more stable )
5) booted up pc and pressed F8 to enter safe mode..... in safe mode i ran "driver sweeper" and selected amd,nvidia display and nvidia chipset ( i have previously used the XFX GTS250 )
6) after driver sweeper finished i restarted
7) back on desktop i installed the 10.2 ati release ( this was the first driver that patched the issue "grey screen/vertical line corruption" ...... upon completion i rebooted the pc
8) back on desktop i pressed "reset to factory defaults" .... then restarted pc again
9) driver installation is complete
obviously end users shouldnt have to carry out this when installing drivers,however with the amount of cards previously installed on my pc this was required,and from initial testing it looks good
ive ran all games including the ones that caused problems and they ran without any problems.... and 3dmark03 scored a mammoth 40,137 marks.... this is a record for my pc so im pretty happy
ive done this post so others can try this..... from the hundreds of posts ive read over the last fortnight this is a common problem and not only with the HD4850..... other cards experiencing grey screen/vertical line corruption include the HD5770,HD5870 and other 5 series cards..... ive also read problems with HD4870,s and also HD4890,s....
as i mentioned in the above guide i used the 10.2 drivers.... and as i mentioned this was because these were the first to include a fix for the grey screen problem.... obviously the fix must be included in all future releases however the 11.6 drivers i previouly tried were probally the worse..... and thats why i settled with 10.2
finally and since this is the first time ive managed to run any games with this card i must say how well it performs.... ok its not the latest in hardware however the only other card i have which i can compare it against is the XFX GTS250...and allthough on paper the GTS250 is more powerful the HD4850 performs better... well in my opinion anyway
so there you have it..... another problem sorted.....
i hope this helps someone....
cheers guys