Sapphire 5850 Boot Problem

[andyrp2001]

Installed my Sapphire 5850 yesterday and ever since I have been getting boot problems. PC starts, BIOS splash screen displays and then I get a message saying "BIOS POST failure press F1 to continue". Press F1 and then it starts wihout any further issues.

I could set the BIOS to "Halt on - no errors" but wondered what might be causing this.

I realise my MB and CPU may be a bottleneck for the card but hardware wise I wouldn't expect any compatability issues so does anybody have any ideas what may be causing this?

Thanks,

Andy

 

[andyrp2001]

Done a little more investigation and it seems that on first boot sometimes the video card is not initialising. Any pointers?

Thanks,
Andy

 

[andyrp2001]

Check for motherboard bios update, and if you have the option try other power connectors

I have the latest BIOS and I am using the dedicated PCI-e power connectors from my PSU. I will try using the one of the peripheral connectors and a PCI-e power adapter.

I can hear the PC start (fans running etc) but there is no display, then after a second or two it all stops, starts again automatically, beeps and then launches Windows 7.

Thanks,
Andy

 

[andyrp2001]

Reset you mobos cmos???

Will give that a go also tomorrow night.

Will feedback to see if it improves anything.

Thanks,

Andy

 

[andyrp2001]

Tried different slot, reset CMOS still no improvement. Will hang fire and see what happens when I get my new MB and CPU later in the year.

Andy

 

[andyrp2001]

It seems like the issue is caused by my Sapphire 5850 graphics card. I installed my BFG 7800GT OC and every time I loaded Windows 7 there was no problem.

I have the CPU overclocked in the BIOS and with the 5850 the overclock isn't always applied but when i went back to the 7800GT the overclock was applied everytime.

Tried reducing load on the PSU by removing non-critical hardware but it made no difference.

Do you think this is an issue because I have a PCI-e rev 1 motherboard or is it something else?

Thanks,
Andy

 

[andyrp2001]

It seems like the issue is caused by my Sapphire 5850 graphics card. I installed my BFG 7800GT OC and every time I loaded Windows 7 there was no problem.

I have the CPU overclocked in the BIOS and with the 5850 the overclock isn't always applied but when i went back to the 7800GT the overclock was applied everytime.

Do you think this is an issue because I have a PCI-e rev 1 motherboard or is it something else?

Thanks,
Andy

I have resolved the overclock with workaround which is silent and does not cause any interuption. I used CrystalCPUID and created a startup item that opens CPUID, applies the multiplier overclock and then closes CPUID. There is no detectable delay in boot time and the overclock is applied everytime. This will be OK for the time being until and upgrade my motherbaord, CPU and memory later on in the year.

Thanks for the help and ideas.

Andy

 

[andyrp2001]

This is disconcerting, as I had similar issues. This is the 3rd Sapphire 5850 boot issue thread I have read. I am now wondering if these cards may have a defect...

Have you resovled you issue?

Andy

 

[andyrp2001]

When the boot issue happens does the card's fan maintain a high speed rather than slowing down to idle speeds? This morning I turned the PC on, left the room and returned a few minutes later and the 5850's fan was making a racket. I turned the monitor on and it went to standby, so I had to reset the pc to get into Windows.

Sapphire 5850 here too.

No I don't have that happen.. When I start up I can hear all of the fans in my system running quite high, then they slow right down (as set in the BIOS) and stay that way. The graphics card fan sometimes runs really fast just as Windows desktop appears but it lasts no more than 2 seconds from ramp up to full speed to normal.

Andy